Collector List, Tom Schweich, Page 8

East Side of the West	Collector's List for Tom Schweich Page 8
Tom Schweich

Field Notes: Coll. No 2800, 13 Jun 2022.

Name List: Penstemon virens

2800. Penstemon virens Pennell ex Rydb. 200 m. south of the mine portal, 1.48 km. west northwest of the GNIS location of Idaho Springs. (39.7463,-105.5259,WGS 1984) South-facing, open rocky slope, with Pinus ponderosa and Cercocarpus montanus. Collected while collecting approximate topotypes of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987). 6/13/2022 Edgar Mine, Clear Creek County, Colorado. (COLO , CS201843^‡ )

Field Notes: Coll. No 2801, 13 Jun 2022.

Name List: Physaria vitulifera

2801. Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. 155 m. southwest of the portal, 1.58 km. west northwest of the GNIS location of Idaho Springs (39.7470,-105.5265,WGS 1984) Single plant in a clump of Carex inops var. heliophila at the base of a Cercocarpus montanus. Approximate topotype of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987). Eight basal leaves were removed and delivered to KHD for DNA analysis. 6/13/2022 Edgar Mine, Clear Creek County, Colorado. (COLO )

Habitat of Coll. No. 2801, Physaria vitulifera

Coll. No. 2801, Physaria vitulifera.

Basal leaves of Coll. No. 2801, Physaria vitulifera.

Field Notes: Coll. No 2802, 13 Jun 2022.

Name List: Arabis pycnocarpa var. pycnocarpa

2802. Arabis pycnocarpa M. Hopkins var. pycnocarpa. Basal leaves not withered, hairs simple, flowers light yellow. 187 m. west northwest of the portal, 1.69 km. west northwest of the GNIS location of Idaho Springs (39.7480,-105.5270,WGS 1984) In the bank of a road below Ponderosa pines. Collected while collecting approximate topotypes of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987). 6/13/2022 Edgar Mine, Clear Creek County, Colorado. (d: OBI(92A) , COLO , CS , d: OBI(104) , KHD00078908^‡ )

Habitat of Coll. No. 2802, Arabis pycnocarpa var. pycnocarpa.

Coll. No. 2802, Arabis pycnocarpa var. pycnocarpa.

Field Notes: Coll. No 2803, 13 Jun 2022.

Name List: Physaria vitulifera

2803. Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. 141 m. northwest of the primary portal, 1.65 km. west northwest of the GNIS location of Idaho Springs (39.7480,-105.5266,WGS 1984) Growing on a dirt mining road berm. Approximate topotype of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987). Eight basal leaves removed and distributed to KHD for DNA analysis. 6/13/2022 Edgar Mine, Clear Creek County, Colorado. (d: OBI(92A) , d: OBI(104) , KHD00076785^‡ )

Habitat of Coll. No. 2803, Physaria vitulifera

Coll. No. 2803, Physaria vitulifera

Coll. No. 2803, Physaria vitulifera.

Basal leaves of Coll. No. 2803, Physaria vitulifera.

Field Notes: Coll. No 2804, 13 Jun 2022.

Name List: Physaria vitulifera

2804. Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. Three caudices of (maybe) one plant. 61 m. north of the main portal of the Edgar Mine, 1.54 km. northwest of the GNIS location of Idaho Springs. (39.7481,-105.5254,WGS 1984) Growing in fractures of rocks in a road cut. No other taxa in this cut. Approximate topotype of Physaria vitulifera (P. A. Rydberg, s.n., 26 Aug 1895, NY185631, NY185632, RM1987). Eight basal leaves removed and distributed to KHD for DNA analysis. 6/13/2022 Edgar Mine, Clear Creek County, Colorado. (COLO , CS , KHD00076784^‡ )

Coll. No. 2804, Physaria vitulifera

Coll. No. 2804, Physaria vitulifera.

Basal leaves of Coll. No. 2804, Physaria vitulifera.

Field Notes: Coll. No. 2805, 13 Jun 2022.

Name List: Physocarpus monogynus

2805. Physocarpus monogynus (Torr.) J.M. Coult. On an abandoned terrace of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road, then 440 m. east on an high pressure gas line service road to Coal Creek. (39.8833,-105.2592,WGS 1984) Terrace on southeast side of Coal Creek with Prunus virginiana and Salix exigua. Also collected nearby: Hesperis matronalis and Vitis riparia. Collected while searching the banks of Coal Creek for Humulus lupulus “Wild Hops.” 6/15/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (CAS , CDA , COLO , FLD )

Field Notes: Coll. No. 2806, 13 Jun 2022.

Name List: Vitis riparia

2806. Vitis riparia Michx. On an abandoned terrace of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road, then 440 m. east on an high pressure gas line service road to Coal Creek. (39.8833,-105.2596,WGS 1984) Growing on Rhus trilobata in shade of Populus angustifolia. Some parts of Coll. No. 2806 combined into Coll. No. 2807 6/15/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: OBI(104) )

Field Notes: Coll. No. 2807, 13 Jun 2022.

Name List: Vitis riparia

2807. Vitis riparia Michx. In flower. On a terrace of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road, then 440 m. east on an high pressure gas line service road to Coal Creek. (39.8833,-105.2597,WGS 1984) Sprawling on the ground and growing on Rhus trilobata under Populus angustifolia. 6/15/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: OBI(104) , d: COLO(108) , d: OBI(92A) , d: JCOS(101) , KHD00078697^‡ )

Coll. No. 2807, Vitis riparia

Field Notes: Coll. No. 2808, 13 Jun 2022.

Name List: Hesperis matronalis

2808. Hesperis matronalis L. Weed: CO DofA, List: B. Approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road to a high pressure gas line service road, then 356 m.southeast to a terrace on the right bank of Coal Creek. (39.8828,-105.2599,WGS 1984) Growing in a thicket of Prunus virginiana and Crataegus succulenta. Colorado Noxious Weed List B. 6/15/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: OBI(104) , d: UCR(105) , d: JCOS(101) , d: OBI(92A) , KHD00078698^‡ )

Coll. No. 2808, Hesperis matronalis

Field Notes: Coll. No. 2809, 13 Jun 2022.

Name List: Astragalus laxmannii var. robustior

2809. Astragalus laxmannii Jacq. var. robustior (Hook.) Barneby & S. L. Welsh. Caulescent, 23-24 cm., hairs dolibriform, leaflets #17, 19 mm., terminal lflt jointed, calyx tube 5 mm., flowers 17 mm. Approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road to a high pressure gas line service road, about 215 m. east on the pipeline road. (39.8842,-105.2605,WGS 1984) Dry terrace above Coal Creek, with Koeleria macrantha. 6/15/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: CDA(106) , d: COLO(108) , d: CAS(107) , d: JCOS(101) )

Coll. No. 2809, Astragalus laxmannii var. robustior.

Field Notes: Coll. No. 2810, 20 Jun 2022.

Name List: Knautia macedonica

2810. Knautia macedonica Griesb. Flowers deep red. In the unreconstructed portion of the park, below the houses on Lookout View Court, 1.81 km. southeast of the GNIS location of Golden. (39.7481,-105.2081,WGS 1984) Probably a garden escapee, now naturalized. 6/20/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (KHD00078699^‡ )

Coll. No. 2810, Knautia macedonica

Field Notes: Coll. No. 2811, 21 Jun 2022.

Name List: Amorpha fruticosa

2811. Amorpha fruticosa L. Shrub, 2 m. tall. Abandoned channel of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road to a high pressure gas line service road, then about 520 m. east. (39.8846,-105.2583,WGS 1984) with Crataegus succulenta and Populus angustifolia. 6/21/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: UCR(105) , d: REGIS(114) , d: CDA(106) , d: FLD(151) )

Field Notes: Coll. No. 2812, 21 Jun 2022.

Name List: Populus angustifolia

2812. Populus angustifolia E. James. Bar of abandoned channel of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road to a high pressure gas line service road, then about 520 m. east. (39.8845,-105.2583,WGS 1984) With Amorpha fruticosa and Crataegus succulenta 6/21/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: OBI(92A) , d: COLO(108) , d: OBI(104) , d: JCOS(101) , KHD00078907^‡ )

Coll. No. 2812, Populus angustifolia.

Bud scales of Coll. No. 2812, Populus angustifolia.

Field Notes: Coll. No. 2813, 21 Jun 2022.

Name List: Papaver orientale

2813. Papaver orientale L. Approx. 30 flowering stems, petals bright red with purple spot, stamens dark purple. Bar of abandoned channel of Coal Creek, approximately 1.6 mi. west on CO Highway 72 from CO Highway 93 to Plainview Road, 0.8 mi. generally north on Plainview Road to a high pressure gas line service road, then about 500 m. east northeast. (39.8851,-105.2579,WGS 1984) Also collected in the lower channel: Apocynum �floribundum, Amorpha fruticosa, Populus angustifolia, and Vitis riparia. 6/21/2022 Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. (d: CS(110) , d: JCOS(101) , KHD00078906^‡ , OBI183820^‡ )

Coll. No. 2813, Papaver orientale.

Capsules of Coll. No. 2813, Papaver orientale.

Field Notes: Coll. No. 2815, 28 Jun 2022.

Name List: Hymenopappus filifolius var. polycephalus

2815. Hymenopappus filifolius Hook. var. polycephalus (Osterh.) B.L. Turner. Lower east slope of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.33 km. south southeast of the GNIS location of Golden. (39.7139,-105.2042,WGS 1984) Mixed grasses and forbs with: Rhus trilobata, Artemisia ludoviciana, Heterotheca villosa, Amelanchier alnifolia, and Bromus japonicus. 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: UCR(105) , d: CAS(107) , d: FLD(151) , d: JCOS(101) )

Field Notes: Coll. No. 2816, 28 Jun 2022.

Name List: Cercocarpus montanus

2816. Cercocarpus montanus Raf. Common shrub, to 2 m., on open, rocky slopes. Past-flowering, with developing fruit. On the east side, mid-slope, of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.52 km. south southeast of the GNIS location of Golden. (39.7125,-105.2041,WGS 1984) Also here: Rhus trilobata, Artemisia ludoviciana, Ericameria nauseosa var. graveolens, and Heterotheca villosa. 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: COLO(108) , d: FLD(151) , d: CS(110) , CDA )

Coll. No. 2816, Cercocarpus montanus.

Field Notes: Coll. No. 2817, 28 Jun 2022.

Name List: Rumex crispus

2817. Rumex crispus L. Most basal leaves withered. On the east side, steep mid-slope, of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.55 km. south southeast of the GNIS location of Golden. (39.7123,-105.2040,WGS 1984) Growing with: Rhus trilobata, Ericameria nauseosa var. graveolens, and Cercocarpus montanus 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: UCR(105) , d: JCOS(101) , KHD00078905^‡ , OBI183846^‡ )

Coll. No. 2817, Rumex crispus

Field Notes: Coll. No. 2818, 28 Jun 2022.

Name List: Amelanchier alnifolia

2818. Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Small shrubs to 1 m., forming fruit. Top of steep slope, east side of ridge, hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.99 km. south southeast of the GNIS location of Golden. (39.7094,-105.2029,WGS 1984) With Cercocarpus montanus. 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: REGIS(114) , d: EIU(112) , d: CS(110) , UCR )

Fruit of Coll. No. 2818, Amelanchier alnifolia.

Field Notes: Coll. No. 2819, 28 Jun 2022.

Name List: Aristida purpurea var. longiseta

2819. Aristida purpurea Nutt. var. longiseta (Steud.) Vasey. Long awns. Top of ridge of a hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.97 km. south southeast of the GNIS location of Golden. (39.7094,-105.2029,WGS 1984) In a small depression that may hold water at least part of the year, with Plantago patagonica. Collections of this grass in Golden s.l. are commonly var. longiseta. 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: REGIS(114) , d: CAS(107) , d: EIU(112) , d: FLD(151) , CDA )

Field Notes: Coll. No. 2819.1, 28 Jun 2022.

Name List: Plantago patagonica

2819.1 Plantago patagonica Jacq. Top of ridge of a hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.97 km. south southeast of the GNIS location of Golden. (39.7094,-105.2029,WGS 1984) In a small depression that may hold water at least part of the year, with Aristida purpurea var. longiseta. Also collected in the rocks nearby, Delphinium nuttallianum, Amelanchier alnifolia, and Rubus deliciosus. 6/28/2022 Tin Cup Ridge, Jefferson County, Colorado. (d: UCR(105) , d: COLO(108) , OBI183847^‡ )

Field Notes: Coll. No. 2820, 2 Jul 2022.

Name List: Viola canadensis

2820. Viola canadensis L. About mid-way between Bull Gulch and the county boundary, 1.74 km. north northwest of the main gate, 23.4 km. north northwest of Golden (39.9108,-105.2783,WGS 1984) Edge of a dry watercourse, in deep ponderosa pine forest duff. Also collected here: Symphoricarpos rotundifolius and Lactuca serriola. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (CIBO )

Field Notes: Coll. No. 2821, 2 Jul 2022.

Name List: Lactuca serriola

2821. Lactuca serriola L. Stem prickly. Leaves, entire, margins and mid-rib prickly. Flowers, yellow. About mid-way between Bull Gulch and the county boundary, 1.74 km. north northwest of the main gate, 23.4 km. north northwest of Golden. (39.9107,-105.2782,WGS 1984) Edge of a dry watercourse, in deep ponderosa pine forest duff. Also collected here: Symphoricarpos rotundifolius and Viola sp., cf. V. canadensis. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (d: CIBO(102) , d: JCOS(101) )

Field Notes: Coll. No. 2822, 2 Jul 2022.

Name List: Symphoricarpos rotundifolius

2822. Symphoricarpos rotundifolius A. Gray. Developing fruit, few in number, mostly terminal, though some in axils. About mid-way between Bull Gulch and the county boundary, 1.74 km. north northwest of the main gate, 23.4 km. north northwest of Golden. (39.9108,-105.2783,WGS 1984) Near a dry watercourse in open ponderosa pine forest. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (d: CIBO(102) , d: JCOS(101) , KHD00078904^‡ )

Field Notes: Coll. No. 2823, 2 Jul 2022.

Name List: Clematis hirsutissima

2823. Clematis hirsutissima Pursh. Finely divided leaf, 2-3 times pinnately compound. Northern part of the ranch in Boulder County, 2.3 km. north northwest of the main gate, 23.9 km. north northwest of the GNIS location of Golden. (39.9141,-105.2803,WS 1984) Moderate northeast slope in ponderosa pine woodland, also seen nearby Corallorhiza maculata and Jamesia americana. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (CIBO )

Coll. No. 2823, Clematis, c.f. C. hirsutissima.

Field Notes: Coll. No. 2824, 2 Jul 2022.

Name List: Jamesia americana var. americana

2824. Jamesia americana Torr. & A. Gray var. americana. In boulders on ridge above south fork of Spring Brook, 2.75 km. south of Eldorado Springs, 23.9 km. north northwest of the GNIS location of Golden (39.9142,-105.2806,WGS 1984) Also collected nearby: Heuchera bracteata, Clematis hirsutissima, and Urtica dioica. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , FLD , JCOSs.n. , OBI183844^‡ )

Field Notes: Coll. No. 2825, 2 Jul 2022.

Name List: Elymus glaucus ssp. glaucus

2825. Elymus glaucus Buckley ssp. glaucus. Northern portion of the ranch in Boulder County, base of boulders above south fork of Spring Creek, 2.33 km. north northwest of the main gate, 2.67 km. south southwest of Eldorado Springs. (39.9144,-105.2809,WGS 1984) Ponderosa pine forest, also collected here Jamesia americana, Urtica dioica, and Heuchera bracteata. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO )

Coll. No. 2825, Elymus glaucus ssp. glaucus.

Field Notes: Coll. No. 2826, 2 Jul 2022.

Name List: Heuchera bracteata

2826. Heuchera bracteata (Torr.) Ser. Northern portion of the ranch in Boulder County, base of boulders above south fork of Spring Creek, 2.33 km. north northwest of the main gate, 2.67 km. south southwest of the GNIS location of Eldorado Springs. (39.9144,-105.2811,WGS 1984) Ponderosa pine forest, also collected here: Dryopteris filix-mas, Jamesia americana, Urtica dioica, and Elymus glaucus. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , KHD00078903^‡ )

Habitat of Coll. No. 2826, Heuchera bracteata.

Coll. No. 2826, Heuchera bracteata.

Field Notes: Coll. No. 2826.1, 2 Jul 2022.

Name List: Dryopteris filix-mas

2826.1 Dryopteris filix-mas (L.) Schott. Northern portion of the ranch in Boulder County, very close to the western parcel boundary, base of boulders above south fork of Spring Creek, 2.33 km. north northwest of the main gate, 2.67 km. south southwest of the GNIS location of Eldorado Springs. (39.9144,-105.2811,WGS 1984) Ponderosa pine forest, also collected here: Jamesia americana, Heuchera bracteata, Urtica dioica, and Elymus glaucus. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , KHD78902^‡ )

Coll. No. 2826.1, Dryopteris filix-mas.

Fruiting bodies of Coll. No. 2826.1, Dryopteris filix-mas.

Field Notes: Coll. No. 2827, 2 Jul 2022.

Name List: Urtica dioica ssp. gracilis

2827. Urtica dioica L. ssp. gracilis (Aiton) Seland. Northern portion of the ranch in Boulder County, very close to the western parcel boundary, in streambed of south fork of Spring Creek, 2.32 km. north northwest of the main gate, 2.68 km. south southwest of the GNIS location of Eldorado Springs. (39.9143,-105.2809,WGS 1984) Ponderosa pine forest, also collected nearby: dryopteris filix-mas, Jamesia americana, Heuchera bracteata, and Elymus glaucus. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , KHD00078901^‡ )

Field Notes: Coll. No. 2828, 2 Jul 2022.

Name List: Silene latifolia

2828. Silene latifolia Poir. Bank of south fork of Spring Brook, 2.35 km. north northwest of the main gate, 2.63 km. south southwest of the GNIS location of Eldorado Springs. (39.9146,-105.2807,WGS 1984) Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (d: REGIS(114) , CS )

Field Notes: Coll. No. 2829, 2 Jul 2022.

Name List: Glyceria elata

2829. Glyceria elata (Rydb.) M. E. Jones. In the streambed of the south fork of Spring Brook, 2.38 km. north northwest of the main gate, and 2.56 km. south southwest of the GNIS location of Eldorado Springs. (39.9150,-105.2799,WGS 1984) Streambed shaded by Ponderosa pines, previously collected nearby: Corylus cornuta, Circaea alpina, and Parietaria pensylvanica. Prosartes trachycarpa also observed nearby. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , KHD00078680^‡ )

Field Notes: Coll. No. 2830, 2 Jul 2022.

Name List: Ranunculus macounii

2830. Ranunculus macounii Britton. Rooted in water of the south fork of Spring Brook, 2.41 km. north northwest of the main gate, 2.55 km. south southwest of the GNIS location of Eldorado Springs. (39.9151,-105.2802,WGS 1984) Shade streambed under ponderosa pines, previously collected nearby: Corylus cornuta, Circaea alpina, Parietaria pensylvanica, and Glyceria elata. Prosartes trachycarpa also observed nearby. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (d: CIBO(102) , d: JCOS(101) , KHD00078900^‡ )

Coll. No. 2830, Ranunculus macounii.

Field Notes: Coll. No. 2831, 2 Jul 2022.

Name List: Papaver orientale

2831. Papaver orientale L. Sterile. In deep shade beside north fork of Spring Brook, 2.49 km. north northwest of the main gate, 2.49 km. south southwest of the GNIS location of Eldorado Springs. (39.9156,-105.2805,WGS 1984) 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO )

Coll. No. 2831, Papaver orientale.

Field Notes: Coll. No. 2832, 2 Jul 2022.

Name List: Mentha spicata

2832. Mentha spicata L. Very short petioles. Sterile, identified by “spearmint” smell and taste at time of collection. Middle of small swampy area on the north fork of Spring Brook, 2.52 km. north northwest of the main gate, 2.45 km. south southwest of the GNIS location of Eldorado Springs. (39.9159,-105.2803,WGS 1984) Deep forest shade, also seen or collected nearby: Ligusticum porteri, Papaver orientale, and Populus tremuloides. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO )

Field Notes: Coll. No. 2833, 2 Jul 2022.

Name List: Ligusticum porteri

2833. Ligusticum porteri J.M. Coult. & Rose. Along the north fork of Spring Brook, 2.53 km. north northwest of the main gate, 2.42 km. south southwest of the GNIS location of Eldorado Springs. (39.9160,-105.2800,WGS 1984) Sunny spot, more plants in vegetative state in shade. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (COLO )

Coll. No. 2833, Ligusticum porteri

Field Notes: Coll. No. 2834, 2 Jul 2022.

Name List: Antennaria neglecta

2834. Antennaria neglecta Greene. Leaves adaxial glabrous, abaxial tomentose. In shade along the north fork of Spring Brook, 2.56 km. north northwest of the main gate, 2.36 km. south southwest of the GNIS location of Eldorado Springs. (39.9164,-105.2793,WGS 1984) Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (d: CIBO(102) , d: JCOS(101) , KHD00078899^‡ )

Coll. No. 2834, Antennaria neglecta.

Field Notes: Coll. No. 2835, 2 Jul 2022.

Name List: Erigeron divergens

2835. Erigeron divergens Torr. & A. Gray. Left bank of the north fork of Spring Brook, 2.59 km. north northwest of the main gate, 2.31 km. south southwest of the GNIS location of Eldorado Springs. (39.9167,-105.2791,WGS 1984) Sunny spot among ponderosa pines above the creek, also collected or seen nearby: Humulus lupulus, Rumex acetosella, Castilleja rhexifolia, and Smilax lasioneuron. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (d: JCOS(101) , d: CIBO(102) , KHD00079103^‡ )

Coll. No. 2835, Erigeron divergens.

Field Notes: Coll. No. 2836, 2 Jul 2022.

Name List: Rosa eglanteria

2836. Rosa eglanteria L. Leaves abaxial dense glandular-stipitate. Right bank of the north fork of Spring Brook, 2.56 km. north northwest of the main gate, 2.33 km. south southwest of the GNIS location of Eldorado Springs. (39.9165,-105.2785,WGS 1984) Open ponderosa pine forest. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (d: CIBO(102) , d: JCOS(101) , KHD00079748^‡ , OBI183828^‡ )

Coll. No. 2836, Rosa eglanteria.

Field Notes: Coll. No. 2837, 2 Jul 2022.

Name List: Lolium arundinaceum

2837. Lolium arundinaceum (Schreb.) Darbysh. South fork of Spring Brook, 2.36 km. north northwest of the main gate, 2.51 km. south southwest of the GNIS location of Eldorado Springs. (39.9152,-105.2779,WGS 1984) Edge of ponderosa pine woodland, just above the creek. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , KHD00079104^‡ )

Diagnosis of Coll. No. 2837, Schedonorus arundinaceus.

Coll. No. 2837, Schedonorus arundinaceus.

Field Notes: Coll. No. 2838, 2 Jul 2022.

Name List: Galium boreale

2838. Galium boreale L. Perennial. South side of south fork of Spring Brook, 2.33 km. north northwest of the main gate, 2.57 km. south southwest of the GNIS location of Eldorado Springs. (39.9149,-105.2786,WGS 1984) Amid grasses and forbs under ponderosa pine canopy. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch (North), Boulder County, Colorado. (CIBO , REGISs.n. )

Field Notes: Coll. No. 2839, 2 Jul 2022.

Name List: Pseudognaphalium canescens

2839. Pseudognaphalium canescens (DC.) Anderberg. Dried out, but still trying to bloom. In the saddle between Spring Brook and Bull Gulch drainages, very close to the Boulder/Jefferson County boundary, 2.11 km. north northwest of the main gate, 2.78 km. south southwest of the GNIS location of Eldorado Springs. (39.9134,-105.2783,WS 1984) Open ponderosa pine woodland. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (CS201831^‡ , REGIS )

Field Notes: Coll. No. 2840, 2 Jul 2022. 1 Jan 2023. Glossary: subpalmate.

Name List: Potentilla hippiana � pulcherrima

2840. Potentilla hippiana � pulcherrima. In the saddle between Spring Brook and Bull Gulch drainages, very close to the Boulder/Jefferson County boundary, 2.08 km. north northwest of the main gate, 2.82 km. south southwest of the GNIS location of Eldorado Springs. (39.9131,-105.2783,WGS 1984) In grasses around scattered ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (d: CIBO(102) , d: JCOS(101) , KHD00078705^‡ , OBI183845^‡ )

Voucher of Coll. No. 2840, Potentilla hippiana � pulcherrima in progress.

Coll. No. 2840, Potentilla hippiana � pulcherrima

Subpalmate basal leaves of Coll. No. 2840, Potentilla hippiana � pulcherrima

Comments: 11/7/2022, Coll. No. 2840, 2 July 2022, characters observed: Perennial herb, to 38 cm., terrestrial, not particularly glandular; Stems, ascending to erect; Stipules, entire; Leaves, compound, basal, subpalmate, leaflets (5)7, 22-48 mm. × 9-14 mm. wide, toothed entire length, 9 teeth/side, densely white below, green above, stem leaves few; Sepals, 5 mm. × 2 mm. wide, green, epicalyx bractlets, 4 mm. × 1.2 mm. wide, green; Petals, 4 mm. × 3.5 mm. wide; Styles, 2 mm.

Field Notes: Coll. No. 2841, 2 Jul 2022.

Name List: Bromus sterilis

2841. Bromus sterilis L. About 150 m. north of Bull Gulch, 1.49 km. north northwest of the main gate, 3.38 km. south of the GNIS location of Eldorado Springs. (39.9092,-105.2774,WGS 1984) Moderate south-facing slope in open ponderosa pine woodland. Other grasses collected nearby: Bromus briziformis, B. lanatipes, and Danthonia spicata. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space. 7/2/2022 Lippincott Ranch, Jefferson County, Colorado. (d: JCOS(101) , KHD00078679^‡ )

Coll. No. 2841, Bromus sterilis.

Comments: 11/8/2022, Coll. No. 2841, 2 Jul 2022, characters observed: Annual grass, 22-33 cm.; Leaves, sheath, closed, scantily pilose, ligule, membranous, 1.5 mm., lacerate, auricles, absent, blade, 15 cm., × 1.8 mm. wide, flat; Inflorescence, 1 per culm, >leaves, panicle, 14 cm. × 2.5 cm. wide; Rachis, not extended, scabrous; Spikelets, #5, 42 mm. × 5 mm. wide, similar, borne singly, pedicels, 25 mm., Compression, lateral; Glumes, lower, 9 mm., upper 13.5 mm., <lowest floret; Florets, 6 per spikelet; Axis, scabrous; Callus, minutely hairy; Lemma, 16.5 mm., >glumes, oddly rolled rather than keeled, mid-vein to margin 0.9-1.1 mm., awn, subterminal, 17.5 mm., straight.

Field Notes: Coll. No. 2842, 4 Jul 2022.

Name List: Elymus repens

2842. Elymus repens (L.) Gould. Weed: CO DofA, List: C. Private garden on Garden Street, in well of tree, and other slopes, 1.06 km. north of the GNIS location of Golden. (39.7648,-105.2234,WGS 1984) Colorado Noxious Weed List C. 7/4/2022 407 Garden Street, Jefferson County, Colorado. (d: JCOS(101) , KHD00079832^‡ )

Coll. No. 2842, Elymus repens

Comments: 11/8/2022, Coll. No. 2842, 4 July 2022, characters observed: Perennial grass, 60-130 cm., rhizomatous; Stem, herbaceous; Internodes, hollow, glabrous; Leaves, sheath and blade differentiated Sheath, 120 mm., open, margin not ciliate; Ligule, membraneous, 0.4 mm.; Auricles, absent; Blade, 150 mm. × 8.5-9.0 mm. wide, not lax, involute, distal adaxial surface sparsely pilose over veins; Inflorescence, 1 per culm, >leaves, 2-sided spike, 130-150 mm. × 9 mm. wide, Rachis, not extended, glaucus, scabrous on sides; Spikelets, many, 18-22 mm. × 6 mm. wide, overlapping 10 mm., similar, 1 per node, sessile; Glumes, lower, 11 mm., veins, #5, bases, terete, upper, 12 mm., <lowest floret, veins, 6(!, probably 7), rounded, membraneous, awns, 0; Florets, 8 per spikelet, at least first 4 bisexual; Rachilla, hairy, not extended; Lemma, 10.5 mm., >glumes, lanceolate, rolled to barely keeled distally, glabrous to barely scabrous distally, green, veins, #7, awn-like tip, ±1 mm., straight; Palea, 9 mm., <lemma, membraneous, keel, ciliate, veins, green; Anthers, 5.3-5.7 mm.; Stigma, feathery; Achene, unknown;

Field Notes: Coll. No. 2843, 6 Jul 2022.

Name List: Bromus inermis

2843. Bromus inermis Leyss. North bank of Tucker Gulch, the stream that drains Golden Gate Canyon, just west of North Ford Street, 2.55km. north northwest of the GNIS location of Golden. (39.7712,-105.2317,WGS 1984) Streamside with cottonwoods (Populus deltoides), box elders (Acer negundo) and chokecherries (Prunus virginiana). Valuable agricultural grass that is invasive of native grasslands. 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (d: REGIS(114) , d: FLD(151) )

Coll. No. 2843, Bromus inermis

Field Notes: Coll. No. 2844, 6 Jul 2022.

Name List: Veronica anagallis-aquatica

2844. Veronica anagallis-aquatica L. Bed of Tucker Gulch, the stream that drains Golden Gate Canyon, 75 m. west of North Ford Street, 2.57 km. north northwest of the GNIS location of Golden. (39.7713,-105.2319,WGS 1984) Flowing water of gulch lined by cottonwoods (Populus deltoides), box elders (Acer negundo) and chokecherries (Prunus virginiana). Native to temperate Eurasia to tropical mountains; widespread non-native in North America. 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (d: REGIS(114) , d: FLD(151) )

Field Notes: Coll. No. 2845, 6 Jul 2022.

Name List: Prunus virginiana

2845. Prunus virginiana L. Dark red leaves, fruit. North bank of Tucker Gulch, the stream draining Golden Gate Canyon, above the stream, 130 m. along gulch generally west of North Ford Street, 2.61 km. north northwest of the GNIS location of Golden. (39.7714,-105.2324,WGS 1984) Common native shrub or small tree thriving in urban habitat. 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (d: FLD(151) , d: CS(110) )

Coll. No. 2845, Prunus virginiana.

Field Notes: Coll. No. 2846, 6 Jul 2022.

Name List: Lycium chinense

2846. Lycium chinense Mill. One thorn seen on stem, leaves alternate, entire, petals 5 fused at base, floral tube < lobes, ovary position uncertain, stamens 5, stigma entire. North boundary of City of Golden parcel, sprawling down slope with yard waste from adjacent privately-owned parcel, about 140 m. west northwest of North Ford Street. 2.64 km. northwest of the GNIS location of Golden. (39.7716,-105.2324,WGS 1984) Weedy slope with Bromus inermis, Euphorbia esula, Ulmus pumila, etm. 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (KHD00079831^‡ )

Coll. No. 2486, Lycium chinense

Flower of Coll. No. 2486, Lycium chinense

Scan of Coll. No. 2486, Lycium chinense

Comments: 11/11/2022, Coll. No. 2846, 6 Jul 2022, characters observed: Perennial, herbaceous, sprawling; Stem, thorn, #1, 6 mm.; Leaves, alternate, petioles 5 mm., blade 44 mm. × 12 mm. wide, lanceolate to obovate, entire; Sepals, tube 4 mm. + lobes 1 mm., triangular; Corolla, united at base, tube 4 mm. + lobes #5, 5-6 mm. × 3.2 mm., radially symmetrical; Stamens, #5; Ovary, unknown; Stigma, entire. Corolla tube < lobes and ±hidden by calyx = L. chinense Mill. per Jepson Manual of California.

Field Notes: Coll. No. 2847, 6 Jul 2022.

Name List: Schoenoplectus tabernaemontani

2847. Schoenoplectus tabernaemontani (C.C.Gmel.) Palla. In the water of Tucker Gulch, the stream draining Golden Gate Canyon, between Joseph Circle and Colorado Highway 93, 2.92 km. northwest of the GNIS location of Golden. (39.7725,-105.2352,WGS 1984) 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (CAS , EIU , FLD , REGIS )

Field Notes: Coll. No. 2847.1, 6 Jul 2022.

Name List: Nasturtium officinale

2847.1 Nasturtium officinale W. T. Aiton. In the water of Tucker Gulch, the stream draining Golden Gate Canyon, between Joseph Circle and Colorado Highway 93, 2.92 km. northwest of the GNIS location of Golden. (39.7725,-105.2352,WGS 1984) Urban flora, this location likely disturbed many times by road and other construction. Also collected here: Schoenoplectus tabernaemontani. 7/6/2022 Tucker Gulch (lower), Jefferson County, Colorado. (d: FLD(151) , d: EIU(112) , d: CS(110) , COLO )

Field Notes: Coll. No. 2848, 12 Jul 2022.

Name List: Erigeron eximius

2848. Erigeron eximius Greene. Buffalo Creek Recreation Area, upper reaches of Morrison Creek, southwest of Little Scraggy Peak, 1.83 km. west northwest of the Kelsey Campground, and 5.79 km. southwest of the Little Scraggy Trailhead. (39.3089,-105.2825,WGS 1984) Streamside in shady forest, also collected nearby Aconitum columbianum, Hackelia floribunda, and Geranium caespitosum. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (KHD00079828^‡ )

Coll. No. 2848, Erigeron eximius

Field Notes: Coll. No. 2849, 12 Jul 2022.

Name List: Hackelia floribunda

2849. Hackelia floribunda (Lehm.) I. M. Johnst. Largest specimens about 1 m. tall, bluish-white flowers, nutlets with prickles connate at the base. In Morrison Creek where crossed by the horse trail (possibly an old road), 1.93 km. west northwest of Kelsey Campground, 5.73 km. southwest of the Little Scraggy Trailhead. (39.3099,-105.2829,WGS 1984) Edges of forest along creek; also collected here: Erigeron eximius, Aconitum columbianum, and Geranium caespitosum. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: UCR(105) , KHD00079829^‡ , OBI183826^‡ )

Coll. No. 2849, Hackelia floribunda.

Field Notes: Coll. No. 2850, 12 Jul 2022.

Name List: Geranium richardsonii

2850. Geranium richardsonii Fisch. & Trautv. Buffalo Creek Recreation Area, in a glade beside Morrison Creek where crossed by the horse trail (possibly an old road), 1.93 km. west northwest of Kelsey Campground, 5.73 km. southwest of the Little Scraggy Trailhead. (39.3098,-105.2829,WGS 1984) Edges of forest along creek; also collected here: Erigeron eximius, Aconitum columbianum, and Hackelia floribunda. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: COLO(108) , d: UCR(105) , KHD00079830^‡ , OBI183827^‡ )

Coll. No. 2850, Geranium richardsonii.

Field Notes: Coll. No. 2850.1, 12 Jul 2022.

Name List: Erigeron eximius

2850.1 Erigeron eximius Greene. in a glade beside the creek (39.3098,-105.2829,WGS 1984) Same as Coll. No. 2848. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (Discarded )

Field Notes: Coll. No. 2851, 12 Jul 2022.

Name List: Aconitum columbianum

2851. Aconitum columbianum Nutt. Numerous plants here, just starting to bloom. Buffalo Creek Recreation Area, rooted in the creek bed of Morrison Creek near where crossed by the horse trail (possibly an old road), 1.93 km. west northwest of Kelsey Campground, 5.73 km. southwest of the Little Scraggy Trailhead. (39.3099,-105.2829,WGS 1984) Edges of forest along creek; also collected here: Erigeron eximius, Geranium richardsonii, and Hackelia floribunda. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: EIU(112) , CDA )

Field Notes: Coll. No. 2852, 12 Jul 2022.

Name List: Anticlea elegans

2852. Anticlea elegans (Pursh) Rydb. 2 plants, mostly in bud. On forest floor above Morrison Creek. 2.02 km. northwest of Kelsey Campground, 5.48 km. southwest of the Little Scraggy Trailhead. (39.3118,-105.2828,WGS 1984) 7/12/2022 Morrison Creek, Jefferson County, Colorado. (COLO2792562^‡ )

Field Notes: Coll. No. 2853, 12 Jul 2022.

Name List: Arenaria lanuginosa var. saxosa

2853. Arenaria lanuginosa (Michx.) Rohrb. var. saxosa (A. Gray) Zarucchi, R. L. Hartman & Rabeler. Perennial, stems and pedicels with small downward-pointing hairs, petals, 5, white, Beside horse trail (former road?), on forest floor above Morrison Creek. 2.10 km. northwest of Kelsey Campground, 5.38 km. southwest of the Little Scraggy Trailhead. (39.3126,-105.2829,WGS 1984) Forest-shaded open, east-facing slope; also seen or collected here: Sedum lanceolatum and Anticlea elegans. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: CS(110) , d: COLO(108) , KHD00079834^‡ )

Coll. No. 2853, Arenaria lanuginosa var. saxosa.

Comments: 11/18/2022, Coll. No. 2853, 12 July 2022, characters observed: Perennial, to 20 cm., herbaceous, rhizomatous; Stems, small downward-pointing hairs; Leaves, opposite, stipules (papery or not) absent, connate, 14 mm. × 3 mm. wide, narrowly elliptic; Inflorescence, open cyme; Pedicels, small downward-pointing hairs; Sepals, distinct; Petals, 3 mm. × 1.5 mm. wide, not clawed, entire, white; Stamens, ≥#8; Style, #3; Seeds, unknown.

Field Notes: Coll. No. 2854, 12 Jul 2022.

Name List: Anticlea elegans

2854. Anticlea elegans (Pursh) Rydb. Just starting to bloom. On forest floor above Morrison Creek. 2.10 km. northwest of Kelsey Campground, 5.38 km. southwest of the Little Scraggy Trailhead. (39.3127,-105.2829,WGS 1984) 7/12/2022 Morrison Creek, Jefferson County, Colorado. (CS201818^‡ )

Field Notes: Coll. No. 2855, 12 Jul 2022.

Name List: Aquilegia coerulea

2855. Aquilegia coerulea E. James. In shaded forest beside Morrison Creek, 2.21 km. northwest of the Kelsey Campground, 5.22 km. southwest of the Little Scraggy Trailhead. (39.3140,-105.2829,WGS 1984) 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: CS(110) , COLO )

Coll. No. 2855, Aquilegia coerulea

Field Notes: Coll. No. 2856, 12 Jul 2022.

Name List: Castilleja integra

2856. Castilleja integra A. Gray. “Flowers” are a deeper red than usually seen. In a meadow on the right bank of Morrison Creek, 2.13 km. northwest of Kelsey Campground, and 5.26 km. southwest of the Little Scraggy Trailhead. (39.3135,-105.2825,WGS 1984) West-facing slope with a few aspens. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (CS )

Field Notes: Coll. No. 2857, 12 Jul 2022.

Name List: Gentianella amarella ssp. acuta

2857. Gentianella amarella (L.) B�rner ssp. acuta (Michx.) J. M. Gillett. Flowers magenta, fading to blue. Just north of a saddle, barely in the Morrison Creek watershed, at an old metal gate on the horse trail (possibly an old road), 1.75 km. west northwest of the Kelsey Campground, 5.91 km. southwest of the Little Scraggy Trailhead. (39.3080,-105.2821,WGS 1984) Shaded open forest, i.e., little to no middlestory; also collected nearby: Erigeron eximius. 7/12/2022 Morrison Creek, Jefferson County, Colorado. (d: OBI(104) , d: OBI(92A) , KHD00079835^‡ )

Coll. No. 2857, Gentianella amarella ssp. acuta.

Field Notes: Coll. No. 2858, 12 Jul 2022.

Name List: Packera fendleri

2858. Packera fendleri (A. Gray) W.A. Weber & �. L�ve. In a meadow at the saddle between Morrison Creek and Gunbarrel Creek, 1.52 km. west northwest of Kelsey Campground, and 1.24 km. southwest of Little Scraggy Peak. (39.3071,-105.2802,WGS 1984) Open meadow with a few ponderosa pines, also seen or collected here: Frasera speciosa, Lithospermum multiflorum, and Ceanothus fendleri. 7/12/2022 Little Scraggy Peak, Jefferson County, Colorado. (d: EIU(112) , d: FLD(151) , COLO2706000^‡ , UCR300266^‡ )

Colorado, Pike-San Isabel Forest, CLOSED Forest Road 435A: at Coll. No. 2859.. Field Notes: Coll. No. 2859, 18 Jul 2022, Penstemon teucrioides.

Name List: Penstemon teucrioides

2859. Penstemon teucrioides Greene. Flowers lavender, fading brown to blue. Along the recently closed Forest Road 435A about 435 m. east of its junction with Forest Road 435 “Salt Creek Road,” 6.76 km, northwest of Antero Junction, 22.0 km. northeast of Buena Vista. (38.9591,-106.0047,WGS 1984) In an old road, 4 plants, more up the road. Also here: Astragalus crassicarpus. Also Coll. No. 2862, 377 m. northeast. 7/18/2022 Salt Creek, Park County, Colorado. (d: UCR(105) , KHD00079836^‡ , OBI183823^‡ )

Coll. No. 2859, Penstemon teucrioides.

Field Notes: Coll. No. 2860, 18 Jul 2022.

Name List: Bromus porteri

2860. Bromus porteri (J.M. Coult.) Nash. Inflorescence nodding, very soft hairy. Small valley just north of Salt Creek, near recently closed Forest Road 435A, 6.87 km. northwest of Antero Junction, 22.2 km. northeast of Buena Vista. (38.9603,-106.0041,WGS 1984) Growing in and next to a small wash. Also here: Artemisia frigida. 7/18/2022 Salt Creek, Park County, Colorado. (COLO2705903^‡ , CS201820^‡ , FLD , KHD00078682^‡ )

Coll. No. 2860, Bromus porteri.

Comments: 11/21/2022, Coll. No. 2860, 18 July 2022, characters observed: Perennial grass, 45 cm., caespitose; Leaves, sheath, 130 mm., open about ½-way; collar minutely hairy, ligule, 2 mm., blade, 130 mm. × 4 mm. wide, flat, scabrous; Inflorescence, nodding, 1 per culm, panicle; Rachis, ascending hairy, not quite appressed; Spikelets, many, 23 mm. × 2.8 mm. wide, similar, pedicels, 44 mm.; Compression, unremarkable; Glumes, soft spreading hairy, lower, 7.5 mm., veins, 3, upper 8.5 mm., < lowest floret, veins, 3, converging, awns, 0, but mid-vein goes strongly right to the tip; Florets, 8 per spikelet; Callus, few short hairs; Lemma, 10.5 mm., > glumes, rolled, hairy. veins, 5, convergent, awns, 1, 1 mm., subterminal, straight; Palea, 9.5 mm., < lemma, membranous, ciliate, tip rounded; Stamens, 3; Anthers, 2.2 mm.

Field Notes: Coll. No. 2861, 18 Jul 2022.

Name List: Packera fendleri

2861. Packera fendleri (A. Gray) W.A. Weber & �. L�ve. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.85 km. northwest of Antero Junction, 22.3 km. northeast of Buena Vista. (38.9607,-106.0031,WGS 1984) Sparse vegetation on a sheetflow slope below a small hill with junipers and pines. Also collected here: Penstemon teucrioides and Bromus porteri. 7/18/2022 Salt Creek, Park County, Colorado. (d: CDA(106) , d: EIU(112) , CAS , CS201824^‡ )

Coll. No. 2861, Packera fendleri.

Field Notes: Coll. No. 2862, 18 Jul 2022.

Name List: Penstemon teucrioides

2862. Penstemon teucrioides Greene. Flowers lavender, fading brown to blue. Small valley north of Salt Creek, 6.86 km. northwest of Antero Junction, 22.4 km. northeast of Buena Vista. (38.9610,-106.0024,WGS 1984) On a sparsely vegetated outwash slope. Also Coll. No. 2859, 377 m. southwest. 7/18/2022 Salt Creek, Park County, Colorado. (d: CS(110) , d: EIU(112) , d: COLO(108) , CAS )

Coll. No. 2862, Penstemon teucrioides.

Colorado, Pike-San Isabel Forest, CLOSED Forest Road 435A: 74999. Field Notes: Coll. No. 2863, 18 Jul 2022.

Name List: Platanthera huronensis

2863. Platanthera huronensis (Nutt.) Lindl. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.74 km. northwest of Antero Junction, 22.4 km. northeast of Buena Vista. (38.9606,-106.0014,WGS 1984) Bank of small spring-fed creek, at least 8 plants here, widely spaced along creek. 7/18/2022 Salt Creek, Park County, Colorado. (KHD00079837^‡ )

Coll. No. 2863, Platanthera huronensis (Nutt.)Lindl.

Field Notes: Coll. No. 2864, 18 Jul 2022.

Name List: Potentilla pensylvanica

2864. Potentilla pensylvanica L. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.70 km. northwest of Antero Junction, 22.3 km. northeast of Buena Vista. (38.9601,-106.0017,WGS 1984) On open ground with Artemisia tridentata, A. frigida, Koeleria macrantha, and Nassella viridula. 7/18/2022 Salt Creek, Park County, Colorado. (d: CDA(106) , d: CS(110) , d: EIU(112) , KHD00079838^‡ )

Coll. No. 2864, Potentilla pensylvanica.

Field Notes: Coll. No. 2865, 18 Jul 2022.

Name List: Oenothera suffrutescens

2865. Oenothera suffrutescens (Ser.) W. L. Wagner & Hoch. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.64 km. northwest of Antero Junction, 22.2 km. northeast of Buena Vista. (38.9595,-106.0020,WGS 1984) Junction of two small washes, with various sagebrushes, Thermopsis rhombifolia, Allium cernuum, and Mentzelia sp. 7/18/2022 Salt Creek, Park County, Colorado. (COLO )

Field Notes: Coll. No. 2866, 18 Jul 2022.

Name List: Mentzelia speciosa

2866. Mentzelia speciosa Osterh. Petals yellow. Small valley north of Salt Creek, formerly accessed by recently closed Forest Road 435A, 6.64 km. northwest of Antero Junction, 22.2 km. northeast of Buena Vista. (38.9594,-106.0020,WGS 1984) Junction of two small washes, with various sagebrushes, Thermopsis rhombifolia, Allium cernuum, and Oenothera suffrutescens sp. 7/19/2022 Salt Creek, Park County, Colorado. (KHD00079839^‡ )

Coll. No. 2866, Mentzelia speciosa.

Field Notes: Coll. No. 2867, 18 Jul 2022.

Name List: Campanula parryi

2867. Campanula parryi A. Gray. Along the recently closed Forest Road 435A, about 280 m. east of it's junction with Forest Road 435 “Salt Creek Road,” 6.72 km. northwest of Antero Junction, 21.8 km. northeast of Buena Vista. (38.9583,-106.0055,WGS 1984) On the floor of an aspen glade just north of Salt Creek. 7/19/2022 Salt Creek, Park County, Colorado. (d: CAS(107) , COLO2706026^‡ , CS201816^‡ , KHD00079840^‡ )

Coll. No. 2867, Campanula parryi.

Field Notes: Coll. No. 2868, 18 Jul 2022.

Name List: Oenothera cespitosa ssp. macroglottis

2868. Oenothera cespitosa Nutt. ssp. macroglottis (Rydb.) W.L. Wagner. Flowers closed. Along the recently closed Forest Road 435A, about 150 m. east of it's junction with Forest Road 435 “Salt Creek Road,” 6.80 km. northwest of Antero Junction, 21.7 km. northeast of Buena Vista. (38.9580,-106.0067,WGS 1984) 7/18/2022 Salt Creek, Park County, Colorado. (KHD00078700^‡ )

Coll. No. 2868, Oenothera cespitosa ssp. macroglottis.

Field Notes: Coll. No. 2869, 18 Jul 2022.

Name List: Physaria vitulifera

2869. Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. Fruit only, no flowers. Along the recently closed Forest Road 435A, about 150 m. east of it's junction with Forest Road 435 “Salt Creek Road,” 6.80 km. northwest of Antero Junction, 21.7 km. northeast of Buena Vista. (38.9580,-106.0067,WGS 1984) 7/18/2022 Salt Creek, Park County, Colorado. (KHD00079841^‡ , OBI183822^‡ )

Field Notes: Coll. No. 2870, 18 Jul 2022.

Name List: Androsace septentrionalis

2870. Androsace septentrionalis L. In a small valley, north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden (38.9583,-106.0115,WGS 1984) Growing at the base of grasses and forbs. 7/18/2022 Salt Creek, Park County, Colorado. (UCR )

Field Notes: Coll. No. 2871, 19 Jul 2022.

Name List: Astragalus alpinus

2871. Astragalus alpinus L. Fruit dark-green, black hairy, pendant. Along an old, closed forest road on the north side of West Tennessee Creek, 0.94 km. southeast of Lily Lake, 15.9 km. north northwest of Leadville. (39.3475,-106.3614,WGS 1984) Common on forest floor. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: CS(110) , COLO )

Field Notes: Coll. No. 2872, 19 Jul 2022.

Name List: Lupinus caespitosus var. utahensis

2872. Lupinus caespitosus Nutt. var. utahensis (S. Watson) B. J. Cox. Along an old, closed forest road on the north side of West Tennessee Creek, 0.94 km. southeast of Lily Lake, 15.9 km. north northwest of Leadville. (39.3475,-106.3613,WGS 1984) Common on forest floor. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: UCR(105) , d: COLO(108) , KHD00078236^‡ , OBI183832^‡ )

Coll. No. 2872, Lupinus caespitosus var. utahensis

Field Notes: Coll. No. 2873, 19 Jul 2022.

Name List: Anticlea elegans

2873. Anticlea elegans (Pursh) Rydb. Along an old, closed forest road on the north side of West Tennessee Creek, 810 m. southeast of Lily Lake, and 15.9 km. north northwest of Leadville. (39.3477,-106.3626,WGS 1984) Open forest. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (CAS1037715^‡ , COLO2706034^‡ , CS201795^‡ )

Field Notes: Coll. No. 2873.1, 19 Jul 2022.

Name List: Potentilla gracilis var. fastigiata

2873.1 Potentilla gracilis Hook. var. fastigiata (Nutt.) S. Watson. Lvs green on top, silver below. Lflts toothed fully to distal ¾. Non-glandular. Along an old, closed forest road on the north side of West Tennessee Creek, 810 m. southeast of Lily Lake, and 15.9 km. north northwest of Leadville. (39.3477,-106.3626,WGS 1984) Open forest. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: CS(110) , CAS )

Field Notes: Coll. No. 2873.2, 19 Jul 2022.

Name List: Danthonia intermedia

2873.2 Danthonia intermedia Vasey. Lemmas glabrous on back, pilose on margins. Along an old, closed forest road on the north side of West Tennessee Creek, 810 m. southeast of Lily Lake, and 15.9 km. north northwest of Leadville. (39.3477,-106.3626,WGS 1984) Open forest, also collected here: Potentilla gracilis and Anticlea elegans. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: UCR(105) , d: COLO(108) , OBI183824^‡ )

Coll. No. 2873.2, Danthonia intermedia.

Field Notes: Coll. No. 2874, 19 Jul 2022.

Name List: Leptosiphon nuttallii ssp. nuttallii

2874. Leptosiphon nuttallii (Gray) J. M. Porter & L. A. Johnson ssp. nuttallii. Along an old, closed forest road on the north side of West Tennessee Creek, 780 m. southwest of Lily Lake, and 16.0 km. north northwest of Leadville (39.3476,-106.3630,WGS 1984) Edges of open forest, on slope above flood plain. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: COLO(108) , d: CS(110) , d: REGIS(114) , CDA )

Field Notes: Coll. No. 2875, 19 Jul 2022.

Name List: Agoseris aurantiaca var. purpurea

2875. Agoseris aurantiaca (Hooker) Greene var. purpurea (A. Gray) Cronquist. Phyllaries imbricate, 3 mm. wide, ciliate distally, purple-blotched; cypselae gradually tapered to beak. Along an old, closed forest road on the north side of West Tennessee Creek, 770 m. southeast of Lily Lake, 16.0 km. north northwest of Leadville. (39.3478,-106.3630,WGS 1984) Open ground, nine plants seen, not showy, easy to overlook. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (KHD00078235^‡ )

Coll. No. 2874, Agoseris aurantiaca var. purpurea.

Field Notes: Coll. No. 2876, 19 Jul 2022.

Name List: Eriogonum umbellatum var. majus

2876. Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook. Light yellow flowers, just a little darker than cream-colored. Along an old, closed forest road on the north side of West Tennessee Creek, 770 m. southeast of Lily Lake, 16.0 km. north northwest of Leadville. (39.3477,-106.3630,WGS 1984) Open ground on edges of forest. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: CAS(107) , d: CS(110) , CDA )

Field Notes: Coll. No. 2877, 19 Jul 2022.

Name List: Eremogone congesta var. congesta

2877. Eremogone congesta (Nutt.) Ikonn. var. congesta. More delicate than some. Along an old, closed forest road on the north side of West Tennessee Creek, 740 m. southeast of Lily Lake, 16.0 km. north northwest of Leadville. (39.3473,-106.3638,WGS 1984) Nearly bare soil on bench above creek. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: CAS(107) , d: CS(110) , CDA )

Field Notes: Coll. No. 2877.1, 19 Jul 2022.

Name List: Arenaria lanuginosa var. saxosa

2877.1 Arenaria lanuginosa (Michx.) Rohrb. var. saxosa (A. Gray) Zarucchi, R. L. Hartman & Rabeler. Very few in shade. Along an old, closed forest road on the north side of West Tennessee Creek, 740 m. southeast of Lily Lake, 16.0 km. north northwest of Leadville. (39.3473,-106.3638,WGS 1984) Bare soil with a few trees on bench above the flood plain of the creek. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (KHD00078234^‡ )

Coll. No. 2877.1, Arenaria lanuginosa var. saxosa.

Field Notes: Coll. No. 2878, 19 Jul 2022.

Name List: Shepherdia canadensis

2878. Shepherdia canadensis (L.) Nutt. In bud, flowers not open yet. Along an old, closed forest road on the north side of West Tennessee Creek, 740 m. southeast of Lily Lake, 15.9 km. north northwest of Leadville. (39.3465,-106.3651,WGS 1984) Low shrub under trees of open forest. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: UCR(105) , d: EIU(112) , KHD00078233^‡ , OBI183840^‡ )

Coll. No. 2878, Shepherdia canadensis.

Field Notes: Coll. No. 2879, 19 Jul 2022.

Name List: Pedicularis groenlandica

2879. Pedicularis groenlandica Retz. At the end of an old, closed forest road on the north side of West Tennessee Creek, 720 m. south of Lily Lake, 16.1 km. north northwest of Leadville. (39.3458,-106.3685,WGS 1984) Marshy area under forest trees. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: COLO(108) , CDA )

Field Notes: Coll. No. 2879.1, 19 Jul 2022.

Name List: Bistorta vivipara

2879.1 Bistorta vivipara (L.) Delarbre. At the end of an old, closed forest road on the north side of West Tennessee Creek, 720 m. south of Lily Lake, 16.1 km. north northwest of Leadville. (39.3458,-106.3685,WGS 1984) Marshy place under forest trees., with Pedicularis groenlandica. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (KHD00078232^‡ )

Coll. No. 2878.1, Bistorta vivipara.

Field Notes: Coll. No. 2880, 19 Jul 2022.

Name List: Geum triflorum

2880. Geum triflorum Pursh. On a former oxbow of West Tennessee Creek, 830 m. southeast of Lily Lake, 15.9 km. north northwest of Loeadville. (39.3464,-106.3639,WGS 1984) Open area, also collected here; Penstemon procerus, Caltha leptosepala, and Rhodiola rhodantha. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (KHD00078231^‡ , OBI183841^‡ )

Field Notes: Coll. No. 2880.1, 19 Jul 2022.

Name List: Penstemon procerus var. procerus

2880.1 Penstemon procerus Douglas ex Graham var. procerus. On a former oxbow of West Tennessee Creek, 830 m. southeast of Lily Lake, 15.9 km. north northwest of Loeadville. (39.3464,-106.3639,WGS 1984) Open area, also collected here; Geum triflorum, Caltha leptosepala, and Rhodiola rhodantha. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (d: CS(110) , CAS )

Field Notes: Coll. No. 2881, 19 Jul 2022.

Name List: Artemisia campestris var. purshii

2881. Artemisia campestris L. var. purshii (Besser ex Hook.) Cronquist. Edge of forest on west-facing slope above West Tennessee Creek, 870 m. southeast of Lily Lake, 15.9 km. north northwest of Leadville. (39.3471,-106.3625,WGS 1984) Dry gravelly slope under a pine. Distances measured from GNIS point features. 7/19/2022 West Tennessee Creek, Lake County, Colorado. (COLO2705994^‡ , KHD00079102^‡ , OBI183825^‡ )

Westward view on West Tennessee Creek.

Coll. No. 2881, Artemisia borealis var. borealis.

Comments: 11/26/2025, COLO2705994 filed as Oligosporus groenlandicus (Hornem.) A.L�ve & D.L�ve

Field Notes: Coll. No. 2882, 19 Jul 2022.

Name List: Pyrola chlorantha

2882. Pyrola chlorantha Sw. Between West Tennessee Creek and its North Fork, near the intersection of a closed forest road and the Colorado Trail, 1.12 km. southeast of Lily Lake, 15.7 km. north northwest of Leadville. (39.3465,-106.3603,WGS 1984) Shaded forest with little to no understory. Distances measured from GNIS point features. 7/19/2022 North Fork West Tennessee Creek, Lake County, Colorado. (KHD00078230^‡ )

Coll. No. 2882, Pyrola chlorantha.

Colorado State Highway 82: at Brumley. Field Notes: Coll. No. 2883, 20 Jul 2022.

Name List: Penstemon whippleanus

2883. Penstemon whippleanus A. Gray. Subalpine forest on a bank between the access road to the Sno-Tel station and the highway, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0890,-106.5419,WGS 1984) Brumley was a stage stop on the route across Independence Pass. 7/20/2022 Brumley, Lake County, Colorado. (d: CS(110) , d: EIU(112) , d: CAS(107) , CDA )

Coll. No. 2883, Penstemon whippleanus at Brumley.

Field Notes: Coll. No. 2884, 20 Jul 2022.

Name List: Mertensia ciliata var. ciliata

2884. Mertensia ciliata (Torr.) G. Don var. ciliata. On the bank of Lake Creek, beside the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0892,-106.5421,WGS 1984) On the bank of the creek, also collected here: Gentiana parryi, Chamerion angustifolium, and Aconitum columbianum, 7/20/2022 Brumley, Lake County, Colorado. (d: EIU(112) , CAS1310447^‡ , CS201802^‡ , REGISs.n. )

Colorado State Highway 82: at Brumley. Field Notes: Coll. No. 2885, 20 Jul 2022.

Name List: Aconitum columbianum

2885. Aconitum columbianum Nutt. On the bank of Lake Creek, beside the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0892,-106.5421,WGS 1984) On the bank of the creek, also collected here: Gentiana parryi, Chamerion angustifolium, and Mertensia ciliata. 7/20/2022 Brumley, Lake County, Colorado. (d: CAS(107) , KHD00078229^‡ )

Coll. No. 2885, Aconitum columbianum.

Field Notes: Coll. No. 2886, 20 Jul 2022.

Name List: Eriogonum umbellatum var. majus

2886. Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook. All infested with aphids tended by biting (!) black ants. About ½ mile north of Brumley on the east side of the road, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0949,-106.5420,WGS 1984) Treeless slope (avalanche chute?) above the highway. 7/20/2022 Brumley, Lake County, Colorado. (d: Unknown(123) , d: EIU(112) , d: FLD(151) , KHD00078228^‡ )

Field Notes: Coll. No. 2887, 20 Jul 2022.

Name List: Aquilegia coerulea

2887. Aquilegia coerulea E. James. About ½ mile north of Brumley on the east side of the road, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0953,-106.5419,WGS 1984) About 60 m. above the highway on hummocky treeless slope that may be an avalanche chute. 7/20/2022 Brumley, Lake County, Colorado. (d: EIU(112) , KHD00079101^‡ )

Field Notes: Coll. No. 2888, 20 Jul 2022.

Name List: Linum lewisii

2888. Linum lewisii Pursh. Styles > stamens for all flowers examined and collected. About ½ mile north of Brumley on the east side of the road, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0953,-106.5419,WGS 1984) About 60 m. above the highway on hummocky treeless slope that may be an avalanche chute. 7/20/2022 Brumley, Lake County, Colorado. (d: CS(110) , OBI183830^‡ )

Field Notes: Coll. No. 2888.1, 20 Jul 2022.

Name List: Erysimum capitatum

2888.1 Erysimum capitatum (Hook.) Greene. About ½ mile north of Brumley on the east side of the road, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0953,-106.5419,WGS 1984) About 60 m. above the highway on hummocky treeless slope that may be an avalanche chute. 7/20/2022 Brumley, Lake County, Colorado. (d: COLO(108) , d: CS(110) , UCR )

Field Notes: Coll. No. 2889, 20 Jul 2022.

Name List: Campanula rotundifolia

2889. Campanula rotundifolia L. About ½ mile north of Brumley on the east side of the highway, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0953,-106.5411,WGS 1984) About 140 m. above the highway on hummocky slope (avalanche chute?) with a few small willows. 7/20/2022 Brumley, Lake County, Colorado. (d: CS(110) , d: EIU(112) , CDA )

Colorado State Highway 82: at pullout. Field Notes: Coll. No. 2890, 20 Jul 2022.

Name List: Cystopteris fragilis

2890. Cystopteris fragilis (L.) Bernh. About ½ mile north of Brumley on the east side of the highway, about 12 road miles on Colorado Highway 82 generally west from Twin Lakes, Lake County, Colorado; 175 km. southwest of Golden. (39.0954,-106.5410,WGS 1984) About 140 m. above the highway in a rock pile of hummocky terrain (avalanche chute?) with a few small willows. 7/20/2022 Brumley, Lake County, Colorado. (CS201808^‡ , KHD79752^‡ , OBI183829^‡ , UCR300274^‡ )

Coll. No. 2890, Cystopteris fragilis

Colorado State Highway 82: at Brumley. Field Notes: Coll. No. 2891, 20 Jul 2022.

Name List: Pedicularis groenlandica

2891. Pedicularis groenlandica Retz. Edge of slough beside the North Fork of Lake Creek, near the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0895,-106.5421,WGS 1984) Common on edge of slough (former channel of the creek). Brumley was a stage stop on the route across Independence Pass. 7/20/2022 Brumley, Lake County, Colorado. (d: EIU(112) , CAS )

Coll. No. 2891, Pedicularis groenlandica

Colorado State Highway 82: at Brumley. Field Notes: Coll. No. 2892, 20 Jul 2022. Glossary: pollinium.

Name List: Platanthera aquilonis

2892. Platanthera aquilonis Sheviak. Edge of slough beside the North Fork of Lake Creek, near the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0895,-106.5421,WGS 1984) Common on edge of slough (former channel of the creek). Brumley was a stage stop on the route across Independence Pass. 7/20/2022 Brumley, Lake County, Colorado. (KHD00079749^‡ )

Coll. No. 2892, Platanthera aquilonis.

Flower of Coll. No. 2892, Platanthera aquilonis.

Flower of Coll. No. 2892, Platanthera aquilonis, pollinia indicated by arrow.

Field Notes: Coll. No. 2893, 20 Jul 2022.

Name List: Geum macrophyllum var. perincisum

2893. Geum macrophyllum Willd. var. perincisum (Rydb.) Raup. Edge of slough beside the North Fork of Lake Creek, near the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0895,-106.5422,WGS 1984) Common on edge of slough (former channel of the creek). Brumley was a stage stop on the route across Independence Pass. 7/20/2022 Brumley, Lake County, Colorado. (KHD00079750^‡ , OBI183831^‡ )

Coll. No. 2893, Geum macrophyllum var. perincisum

Field Notes: Coll. No. 2894, 20 Jul 2022.

Name List: Caltha chionophila

2894. Caltha chionophila Greene. On bank of North Fork of Lake Creek, near the access road to the Sno-Tel station, about 11 road miles generally west on Colorado Highway 82 from the town of Twin Lakes, 175 km. southwest of Golden. (39.0895,-106.5422,WGS 1984) Uncommon. Brumley was a stage stop on the route across Independence Pass. 7/20/2022 Brumley, Lake County, Colorado. (KHD00079751^‡ )

Coll. No. 2894, Caltha chionophila.

Field Notes: Coll. No. 2895, 21 Jul 2022.

Name List: Eriogonum umbellatum var. majus

2895. Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook. A few of these plants have flowers at the base of the umbels. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2988,-106.3163,WGS 1984) Openings in aspen forest, surrounded by big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: UCR(105) , KHD00078706^‡ , OBI183821^‡ , REGIS )

Field Notes: Coll. No. 2896, 21 Jul 2022.

Name List: Erigeron subtrinervis

2896. Erigeron subtrinervis Rydb. ex Porter & Britton. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2988,-106.3164,WGS 1984) Openings in aspen forest, surrounded by big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (CS201807^‡ , FLD , KHD00078707^‡ , OBI183835^‡ , UCR203634^‡ )

Field Notes: Coll. No. 2897, 21 Jul 2022.

Name List: Koeleria macrantha

2897. Koeleria macrantha (Ledeb.) Schult. Im bloom. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2988,-106.3163,WGS 1984) Openings in aspen forest, surrounded by big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (OBI183837^‡ , UCR300281^‡ )

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 2898, 21 Jul 2022.

Name List: Dasiphora fruticosa

2898. Dasiphora fruticosa (L.) Rydb. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2987,-106.3162,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CAS(107) , d: EIU(112) , d: REGIS(114) , CS201806^‡ )

Blue Copper on Coll. No. 2898, Dasiophora fruticosa.

Coll. No. 2898, Dasiophora fruticosa.

Field Notes: Coll. No. 2899, 21 Jul 2022.

Name List: Populus tremuloides

2899. Populus tremuloides Michx. Sterile. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2989,-106.3163,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: UCR(105) , KHD00078708^‡ , OBI183834^‡ )

Field Notes: Coll. No. 2900, 21 Jul 2022.

Name List: Leptosiphon nuttallii ssp. nuttallii

2900. Leptosiphon nuttallii (Gray) J. M. Porter & L. A. Johnson ssp. nuttallii. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2988,-106.3163,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CAS(146) , d: EIU(112) , d: FLD(151) , CDA )

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 2901, 21 Jul 2022.

Name List: Calochortus gunnisonii

2901. Calochortus gunnisonii S. Watson. Petals white to light lavender to lavender, fading blue-purplish. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2987,-106.3161,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CS(110) , KHD00078709^‡ , OBI183838^‡ )

Coll. No. 2901, Calochortus gunnisonii

Petal of Coll. No. 2901, Calochortus gunnisonii.

Field Notes: Coll. No. 2902, 21 Jul 2022.

Name List: Potentilla hippiana var. hippiana

2902. Potentilla hippiana Lehm. var. hippiana. Leaflets more distinctly bicolored than those collected in Jefferson County. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2989,-106.3162,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: UCR(105) , d: CS(110) , d: COLO(108) , KHD00078710^‡ , OBI183839^‡ )

Comments: 12/20/2022, Coll. No. 2902, 21 July 2022, characters observed: Perennial, to 30 cm.; Leaves, basal, compound, leaflets, #9, bases not decurrent, toothed most of length, sericeous adaxially, greenish, tomentose + sericeous abaxially, white; cauline, stipules entire; Calyx, bractlets, same colors as sepals.

Field Notes: Coll. No. 2903, 21 Jul 2022.

Name List: Helianthella quinquenervis

2903. Helianthella quinquenervis (Hook.) A. Gray. With nodding flowers, growing inside a small aspen grove. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2986,-106.3165,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (CAS1094397^‡ , CDA54602^‡ , COLO2705978^‡ , CS201789^‡ )

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 2904, 21 Jul 2022.

Name List: Orthocarpus luteus

2904. Orthocarpus luteus Nutt. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2987,-106.3169,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(108) , d: CS(110) , d: EIU(112) , UCR )

Coll. No. 2904, Orthocarpus luteus.

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 2905, 21 Jul 2022.

Name List: Pedicularis parryi

2905. Pedicularis parryi A. Gray. Corolla pale yellow. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2988,-106.3170,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: UCR(105) , d: COLO(108) , KHD00078711^‡ , OBI183836^‡ )

Coll. No. 2905, Pedicularis parryi.

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 2906, 21 Jul 2022.

Name List: Penstemon rydbergii

2906. Penstemon rydbergii A. Nelson. Along Forest Road 189, about 1 km. west of County Road 18 “East Tennessee Road,” 7.37 km. north northwest of the GNIS location of Leadville. (39.2987,-106.3171,WGS 1984) Openings in aspen forest, mixed with patches of big sagebrush and willows. 7/21/2022 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: UCR(105) , d: CS(110) , KHD00078704^‡ , OBI183833^‡ )

Coll. No. 2906, Penstemon rydbergii.

Field Notes: Coll. No. 2907, 18 Aug 2022.

Name List: Cenchrus longispinus

2907. Cenchrus longispinus (Hack.) Fern. In planted native grass beds, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. (39.7489,-105.2083,WGS 1984) Not previously collected in or near Golden; unclear whether this grass was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 8/18/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (d: COLO(108) , d: JCOS(115) , d: CS(110) , KHD78683^‡ )

Coll. No. 2907, Cenchrus longispinus.

Burs of Coll. No. 2907, Cenchrus longispinus.

Field Notes: Coll. No. 2908, 18 Aug 2022.

Name List: Ambrosia acanthicarpa

2908. Ambrosia acanthicarpa Hook. In planted native grass beds, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. (39.7489,-105.2083,WGS 1984) Not previously collected in or near Golden; unclear whether this Ambrosia was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. Possibly a waif. 8/18/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (KHD00078703^‡ )

Coll. No. 2908, Ambrosia acanthicarpa.

Field Notes: Coll. No. 2909, 18 Aug 2022.

Name List: Eragrostis cilianensis

2909. Eragrostis cilianensis (All.) Vignolo ex Janch. Crateriform glands on mid-ribs of leaf blades, pedicels, and keels of glumes and lemmas. In planted native grass beds, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. (39.7489,-105.2083,WGS 1984) Unclear whether this grass was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 8/18/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (KHD00079833^‡ )

Coll. No. 2909, Eragrostis cilianensis.

Name List: Eragrostis cilianensis

2910. Eragrostis cilianensis (All.) Vignolo ex Janch. Small plants, growing in dry gravels of alley. Crateriform glands on mid-ribs of leaf blades, pedicels, and keels of glumes and lemmas. In the alley between 4th and 5th Streets, running from Arapahoe to Cheyenne Street, 1.20 km. northwest of the GNIS location of Golden. (39.7612,-105.2290,WGS 1984) With Lactuca serriola, Sonchus asper, Kochia scoparia, Chamaesyce sp., Polygonum aviculare,and Parthenocissus quinquefolia. Common weed. 8/21/2022 Golden, Jefferson County, Colorado. (d: CS(110) , KHD00078677^‡ )

Field Notes: Coll. No. 2911, 25 Aug 2022.

Name List: Cenchrus longispinus

2911. Cenchrus longispinus (Hack.) Fern. In planted native grass beds, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. (39.7489,-105.2082,WGS 1984) Not previously collected in or near Golden; unclear whether this grass was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. Native to Colorado, but usually found in sandy habitats. 8/25/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (CDA )

Field Notes: Coll. No. 2912, 8 Sep 2022.

Name List: Panicum miliaceum

2912. Panicum miliaceum L. Weed: CO DofA, List: C. This plant was probably weed-whacked at least once, which may account for its poor condition. Bottom of watercourse, along 23rd Street, opposite Vernon Drive, 1.72 km. southeast of the GNIS location of Golden. (39.7488,-105.2084,WGS 1984) Not previously collected in Golden; unclear whether this grass was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. Colorado Noxious Weed List C. 9/8/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (KHD00078676^‡ )

Coll. No. 2912, Panicum miliaceum.

Field Notes: Coll. No. 2913, 8 Sep 2022.

Name List: Echinochloa crus-galli

2913. Echinochloa crus-galli (L.) P. Beauv. These are medium size; there are others double in height, and others that have been mowed and are quite short. Scattered mainly around the front entrance on 23rd Street, 1.72 km. southeast of the GNIS location of Golden. (39.7489,-105.2083,WGS 1984) Not previously collected in Golden; unclear whether this grass was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 9/8/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CS(110) , KHD00078678^‡ )

Coll. No. 2913, Echinochloa crus-galli.

Field Notes: Coll. No. 2914, 15 Sep 2022. Glossary: waif.

Name List: Cycloloma atriplicifolium

2914. Cycloloma atriplicifolium (Spreng.) J. M. Coult. Mature, i.e., stems and inflorescence red and fruit wings well-developed, whereas Coll. No. 2915 is immature. Hydroseeded “native” area, north corner of park on 23rd Street opposite Table Drive, 1.74 km. southeast of the GNIS location of Golden. (39.7489,-105.2081,WGS 1984) Not previously collected in Golden; unclear whether this plant was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 9/15/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CS(110) , KHD00078701^‡ , OBI183842^‡ )

Coll. No. 2914, Cycloloma atriplicifolium.

Field Notes: Coll. No. 2915, 15 Sep 2022.

Name List: Cycloloma atriplicifolium

2915. Cycloloma atriplicifolium (Spreng.) J. M. Coult. Immature, stems and fruit still green, and wings just beginning to develop. For a mature specimen see, Coll. No. 2914. Hydroseeded “native” area, north corner of park on 23rd Street opposite Table Drive, 1.74 km. southeast of the GNIS location of Golden. (39.7489,-105.2081,WGS 1984) Not previously collected in Golden; unclear whether this plant was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 9/15/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CS(110) , KHD00078702^‡ , OBI183843^‡ )

Coll. No. 2915, Cycloloma atriplicifolium.

Field Notes: Coll. No. 2916, 15 Sep 2022.

Name List: Ambrosia psilostachya

2916. Ambrosia psilostachya DC. Hydroseeded “native” area, north corner of park on 23rd Street opposite Table Drive, 1.74 km. southeast of the GNIS location of Golden. (39.7489,-105.2080,WGS 1984) Common in all open spaces of Golden including nearby slopes of South Table Mountain; unclear whether this plant was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. 9/15/2022 DeLong Park (City of Golden), Jefferson County, Colorado. (d: REGIS(114) , d: CS(110) , d: FLD(151) , COLO )

Field Notes: Coll. No. 2917, 21 Sep 2022.

Name List: Artemisia absinthium

2917. Artemisia absinthium L. Weed: CO DofA, List: B. Leaves 2-3 times pinnatifid, receptacles hairy. On the shoulder of the road at 407 Garden Street, 1.39 km. north of the GNIS location of Golden. (39.7650,-105.2234,WGS 1984) Also here: Artemisia ludoviciana, Cirsium arvensis. Ratibida columnifera, Convolvulus arvensis, Linum lewisii, and Elymus repens. Naturalized at edge of residential street, more in nearby yard, but not planted by this homeowner. All removed by homeowner following identification. Colorado Noxious Weed List B. EDDMaps: 10688546. 9/21/2022 407 Garden Street, Jefferson County, Colorado. (d: CDA(106) , d: COLO(108) , d: CS(110) , KHD00079747^‡ )

Coll. No. 2917, Artemisia absinthum.

Coll. No. 2917, Artemisia absinthium.

Field Notes: Coll. No. 2918.

Name List: Musineon divaricatum

2918. Musineon divaricatum (Pursh) Raf. West-southwest-facing slope of Eagle Ridge, a locally named ridge of upturned Dakota Group between US Highway 6 and Eagleridge Drive, between Stonebridge entrance and Kinney Run, 3.75 km. south southeast of the GNIS location of Golden. (39.7301,-105.2139,WGS 1984) Also here: Lomatium orientale, Helianthus pumilis, Mertensia lanceolata, Astragalus drummondii, Scutellaria brittonii, and Cercocarpus montanus. 5/9/2023 Eagle Ridge, Jefferson County, Colorado. (d: UCR(119) , d: CAS(121) , d: COLO(122) , d: EIU(126) , CDA56585^‡ , CS202024^‡ , OBI^‡ )

Coll. No. 2918, Musineon divaricatum.

Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Xanthoceras sorbifolium. Field Notes: Coll. No. 2919, 13 May 2023.

Name List: Xanthoceras sorbifolium

2919. Xanthoceras sorbifolium Bunge. Near the Cheyenne Street end of the alley between 4th and 5th Streets, 1.22 km. northwest of the GNIS location of Golden. (39.7609,-105.2296,WGS 1984) North side of alley, rooted between telephone pole and fence post, also here Ericameria nauseosa var. graveolens, and various annual weeds. Planted in the former garden at 409 Cheyenne Street (K. Boland, pers. Comm, 2023), though in a different location than where this collection was found. The original location was destroyed by housing construction. iNaturalist: 188853188. 5/13/2023 Golden, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , KHD ^‡ )

Leaf and flower of Coll. No. 2919, Xanthoceras sorbifolium in the alley.

Details of Coll. No. 2919, Xanthoceras sorbifolium in the alley.

Coll. No. 2919, Xanthoceras sorbifolium in the alley.

Comments: 5/13/2023, Coll. No. 2919, 13 May 2023, characters observed: Perennial woody shrub or small tree, to 2 m.; Stem, unarmed; Leaves, alternate, ovate, 95 mm. × 45 mm. wide, compound, pinnate, leaflets #11, 24 mm. × 8 mm. wide, lanceolate, sharply serrate distally, adaxial surface minutely hairy on veins, abaxial surface puberulent; Inflorescence, clusters on previous year's stems; Flowers borne singly; Petioles, 18 mm.; Sepals, #5, 8 mm. × 5 mm. wide, ovate, rounded; Petals, #5, free to base, 20 mm. × 7 mm., oblanceolate, margin crisped(?), greenish-yellow to white distally, ciliate at base; Nectary(???) 5-lobed, orange, club-shaped; Stamens, #8, included, different lengths; Anthers, 1 mm., versatile, yellow; Stigmas, #1, bifid.

Field Notes: Coll. No. 2920, 21 May 2023.

Name List: Lomatium orientale

2920. Lomatium orientale J.M. Coult. & Rose. Near northern boundary, near the bottom of the original hill slope, 2.30 km. northwest of the GNIS location of Golden (39.7687,-105.2327,WGS 1984) with Artemisia ludoviciana, in an area of encroaching smooth brome. 5/23/2023 Schweich Hill, Jefferson County, Colorado. (d: REGIS(128) , COLO )

Field Notes: Coll. No. 2921, 22 May 2023.

Name List: Poa

2921. Poa . Mouth of the canyon of Magpie Gulch, along an old road, about 115 m. west of the parcel boundary, 2.16 km. west northwest of the GNIS location of Golden. (39.7599,-105.2398,WGS 1984) Most likely a revegetation grass in an open grassland. 5/22/2023 Magpie Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Coll. No. 2921, ~~Festuca saximontana~~ Poa sp.

Comments: 10/26/2023, Collection No. 2921, 22 May 2023, characters observed: Perennial grass, 25 cm., cespitose; Stem, glabrous below inflorescence; Leaves, Sheath, 19-20 mm., open; Ligule, membranous, 1 mm., auricles, absent; Blade, 40-42 mm. × >1 mm. wide, revolute [conduplicate?]; Inflorescence, 1 per culm, >leaves, panicle, 55 mm. × 8 mm. wide, branched 2×; Rachis, not extended beyond upper spikelet, scabrous; Spikelets, few (17±), 7 mm. × 2 mm. wide, 1 per node, pedicels 3 mm.; Compression, lateral; Glumes, lower, 4 mm., veins, 3, upper, 4.5 mm., ≤lowest floret, veins, 5, keeled, awns, 0; Florets, 3 per spikelet; Axis, extended beyond upper floret; Lemma, 4.5 mm., proximally glabrous, distally short wavy hairy, keel, glabrous; Palea, 3.5 mm., <lemma; Anthers, 1.3 mm.; Achene, brown.

Field Notes: Coll. No. 2922, 22 May 2023.

Name List: Festuca trachyphylla

2922. Festuca trachyphylla (Hack.) Krajina. Mouth of the canyon of Magpie Gulch, along an old road, about 165 m. west of the parcel boundary, 2.20 km. west northwest of the GNIS location of Golden. (39.7601,-105.2401,WGS 1984) Most likely a revegetation grass in an open grassland. 5/22/2023 Magpie Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Coll. No. 2922, Festuca trachyphylla.

Inflorescence of Coll. No. 2922, Festuca trachyphylla.

Comments: 10/26/2023, Coll. No. 2922, 22 May 2023, characters observed: Perennial grass, 40 cm., cespitose; Leaves, sheath, 21-28 mm., open, ligule, membranous, 0.2 mm., extremely short, auricles, minimal, 0.5 mm. [see illustration in Shaw (2008, fig. 242)], blade, 23-80 mm. × 0.6 mm. wide, involute [conduplicate?]; Inflorescence, 1 per culm, contracted panicle, 55 mm. × 9 mm.; Spikelets, many, 8 mm. × 2 mm. wide, borne singly, pedicels, 2 mm.; Disarticulation, between florets; Glumes, lower, 2.5 mm. upper, 4 mm., <lowest floret, veins, 3, ±parallel, awns, 0, margins, distally ciliate; Florets, 4 per spikelet; Axis, short hairy or long scabrous, not extended beyond upper floret; Lemma, 4.5 mm., >glumes, pubescent distally, veins, ≥5, glabrous, awns, 1, attached end of lemma, 1.5 mm., straight; Palea, 4 mm., <lemma, Anthers, 3 mm.

Field Notes: Coll. No. 2923, 22 May 2023.

Name List: Parietaria pensylvanica

2923. Parietaria pensylvanica Willd. Small branch of Magpie Gulch, southeast-facing slope, 450 m. west of entrance gate, 2.48 km. west northwest of the GNIS location of Golden.With grasses around the base of a small boulder in a moist spot in full sun. 5/22/2023 Magpie Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Coll. No. 2923, Parietaria pensylvanica.

Field Notes: Coll. No. 2924, 22 May 2023.

Name List: Gilia ophthalmoides

2924. Gilia ophthalmoides Brand. Plant slightly sticky, lower stem with arachnoid, cottony hairs, tube and throat extended 3 mm. when dry, corolla throat yellow, petals abaxial purple, adaxial white. On the ridge between Magpie and Nightbird gulches, along a social and/or game trail, 430 m. northwest of the gate to the parcel, 2.48 km. west northwest of the GNIS location of Golden. (39.7613,-105.2421,WGS 1984) Exposed ridge with Cercocarpus montanus the dominant shrub. Uncommon; there are only six other collections within 15 km. 5/22/2023 Magpie Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2924, Gilia ophthalmoides

Field Notes: Coll. No. 2925, 28 May 2023.

Name List: Rhamnus cathartica

2925. Rhamnus cathartica L. Weed: CO DofA, List: Unlisted. One plant with 22 stems, rooted in bank of creek. Also locally called “Kinney Run,” in a triangular city parcel along the projection of Illinois Street below US Highway 6. (39.7373,-105.2151,WGS 1984) With Salix exigua and Prunus virginiana. 5/28/2023 Deadman Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CDA(120) , d: REGIS(128) , d: UCR(119) )

Coll. No. 2925, Rhamnus cathartica on the bank of Deadman Gulch.

Coll. No. 2925, Rhamnus cathartica.

Field Notes: Coll. No. 2926, 28 May 2023.

Name List: Agoseris parviflora

2926. Agoseris parviflora (Nutt.) D. Dietr. Teeth mostly in 5+ pairs; flower color yellow. Local name for a small hogback composed of vertically-upturned Cretaceous-age Dakota Group between Deadman Gulch and US Highway 6, about 3.5 km. south of the GNIS location of Golden. (39.7316,-105.2141,WGS 1984) Nearly flat soil along top of hogback, with Helianthus pumilis, Cercocarpus montanus, Penstemon virens, Alyssum simplex, Erodium cicutarium, and Bromus tectorum. 5/28/2023 Eagle Ridge, Jefferson County, Colorado. (d: COLO(122) , CAS716686^‡ , CS202026^‡ )

Coll. No. 2925, Agoseris parviflora.

Field Notes: Coll. No. 2927, 31 May 2023.

Name List: Primula pauciflora var. pauciflora

2927. Primula pauciflora (Durand) A. R. Mast & Reveal var. pauciflora. In Mt. Galbraith Park, beside a bed rock cascade of the creek in Magpie Gulch, about 900 m. west of the gate to the parcel, 2.81 km. west northwest of the GNIS location of Golden. (39.7588,-105.2460,WGS 1984) Mesic habitat formed by rock outcrops, with Populus × acuminata, Acer glabrum, Physocarpus monogynus, Rubus deliciosus, Ribes cereum, and Prunus virginiana. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: COLO(122) , d: EIU(126) , CS202027^‡ , JCOSs.n. )

Coll. No. 2927, Dodecatheon pulchellum in Magpie Gulch.

Coll. No. 2927, Dodecatheon pulchellum

Field Notes: Coll. No. 2928, 31 May 2023.

Name List: Heuchera parvifolia

2928. Heuchera parvifolia Nutt. ex Torr. & A. Gray. In Mt. Galbraith Park, beside a bed rock cascade of the creek in Magpie Gulch, about 900 m. west of the gate to the parcel, 2.81 km. west northwest of the GNIS location of Golden. (39.7588,-105.2461,WGS 1984) Mesic habitat formed by rock outcrops, with Populus × acuminata, Acer glabrum, Physocarpus monogynus, Rubus deliciosus, Ribes cereum, and Prunus virginiana. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (JCOSs.n. , OBI^‡ )

Coll. No. 2928, Heuchera parvifolia.

Field Notes: Coll. No. 2929, 31 May 2023.

Name List: Lomatium orientale

2929. Lomatium orientale J.M. Coult. & Rose. In Mt. Galbraith Park, beside a bed rock cascade of the creek in Magpie Gulch, about 900 m. west of the gate to the parcel, 2.81 km. west northwest of the GNIS location of Golden. (39.7589,-105.2462,WGS 1984) Dry slope west and away from rock cascade. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: COLO(122) , CAS )

Coll. No. 2929, Lomatium orientale.

Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Crataegus erythropoda. Field Notes: Coll. No. 2930, 31 May 2023.

Name List: Crataegus erythropoda

2930. Crataegus erythropoda Ashe. In Mt. Galbraith Park, beside the creek in Magpie Gulch, about 1100 m. west of the gate to the parcel, 2.99 km. west northwest of the GNIS location of Golden. (39.7585,-105.2477,WGS 1984) 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2930, Crataegus erythropoda.

Field Notes: Coll. No. 2931, 31 May 2023.

Name List: Mentzelia albicaulis

2931. Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A. Gray. Leaves deeply pinnatifid; petals short, yellow. Mount Galbriath Park, north side of Magpie gulch, 2.87 km. west northwest of the GNIS location of Golden. (39.7596,-105.2463,WGS 1984) Steep, sunny, grassy slope about 100 m. above creek. Also collected here: Euphorbia peplus. 5/21/2023 Magpie Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2931, Mentzelia albicaulis.

Field Notes: Coll. No. 2931.1, 31 May 2023.

Name List: Euphorbia peplus

2931.1 Euphorbia peplus L. Annual, erect; leaves alternate, oblanceolate, entire. Mount Galbraith Park, north side of Magpie gulch, about 850 m. west of the parcel gate, 2.87 km. west northwest of the GNIS location of Golden. (39.7596,-105.2463,WGS 1984) Steep, sunny, grassy slope about 100 m. above creek. Also collected here: Mentzelia albicaulis. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , d: JCOS(115) , KHD )

Coll. No. 2931.1, Euphorbia peplus.

Field Notes: Coll. No. 2932, 31 May 2023.

Name List: Corydalis aurea

2932. Corydalis aurea Willd. Mount Galbraith Park, north side of Magpie gulch, about 730 m. west of the parcel gate, 2.87 km. west northwest of the GNIS location of Golden. (39.7596,-105.2453,WGS 1984) Steep, sunny, grassy slope about 85 m. above creek. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2932, Corydalis aurea.

Field Notes: Coll. No. 2933, 31 May 2023.

Name List: Allium textile

2933. Allium textile A. Nelson & J.F. Macbr. Bulb coat fibrous, appearing woven; flowers white. Mount Galbraith Park, north side of Magpie gulch, about 490 m. west of the parcel gate, 2.55 km. west northwest of the GNIS location of Golden. (39.7608,-105.2430,WGS 1984) Moderately steep east-facing grassy slope above patch of Cercocarpus montanus; also here: Phlox multiflora. Common. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: REGIS(128) , d: EIU(126) , d: JCOS(115) )

Coll. No. 2933, Allium textile

Field Notes: Coll. No. 2934, 31 May 2023.

Name List: Descurainia pinnata ssp. brachycarpa

2934. Descurainia pinnata (Walter) Britton ssp. brachycarpa (Richardson) Detling, Amer.Midl. Naturalist. 22: 509. Stem branched distally, stellate-hairy then glandular; leaves bi-pinnate; rachis glandular; sepals yellow; fruit fusiform, glabrous; seeds biseriate; valves distinct mid-vein; ovules 18±. Mount Galbraith Park, north side of Magpie gulch, about 400 m. west northwest of the parcel gate, 2.46 km. west northwest of the GNIS location of Golden. (39.7607,-105.2421,WGS 1984) Around the edges of a large patch of Rhus trilobata. 5/31/2023 Magpie Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2934, Descurainia pinnata ssp. brachycarpa.

Field Notes: Coll. No. 2935, 6 Jun 2023.

Name List: Arabis pycnocarpa var. pycnocarpa

2935. Arabis pycnocarpa M. Hopkins var. pycnocarpa. Douglas Mountain Study Area, area along Guy Gulch, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8030,-105.3671,WGS 1984) South-facing slope, with Artemisia frigida, Cirsium undulatum, and Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: REGIS(128) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2935, Arabis pycnocarpa var. pcynocarpa.

Field Notes: Coll. No. 2936, 6 Jun 2023.

Name List: Camelina microcarpa

2936. Camelina microcarpa Andrz. ex DC. Simple and forked hairs; stem leaves auriculate, simple; petals 3.5 mm., yellow; fruit 6 mm.; valve midvein obscure. Douglas Mountain Study Area, area along Guy Gulch, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8030,-105.3671,WGS 1984) With Cercocarpus montanus and Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: EIU(126) , d: REGIS(128) , d: JCOS(115) )

Coll. No. 2936, Camelina microcarpa.

Field Notes: Coll. No. 2936.1, 6 Jun 2023.

Name List: Scutellaria brittonii

2936.1 Scutellaria brittonii Porter. Douglas Mountain Study Area, area along Guy Gulch, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8030,-105.3671,WGS 1984) With Cercocarpus montanus and Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (CS202030^‡ , JCOSs.n. )

Field Notes: Coll. No. 2936.2, 6 Jun 2023.

Name List: Potentilla fissa

2936.2 Potentilla fissa Nutt. ex Torr. & A.Gray. Douglas Mountain Study Area, area along Guy Gulch, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8030,-105.3671,WGS 1984) With Cercocarpus montanus and Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) , d: CS(124) , d: COLO(122) , d: EIU(126) )

Field Notes: Coll. No. 2937, 6 Jun 2023.

Name List: Carex inops ssp. heliophila

2937. Carex inops L. H. Bailey ssp. heliophila (Mack.) Crins. Douglas Mountain Study Area, area along Guy Gulch, about 47 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8032,-105.3673,WGS 1984) On the nose of a low ridge with Ribes cereum, and Artemisia frigida. Common. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (JCOSs.n. , OBI^‡ , REGISs.n. , UCR307037^‡ )

Field Notes: Coll. No. 2938, 6 Jun 2023.

Name List: Physaria montana

2938. Physaria montana (A. Gray) Greene. Douglas Mountain Study Area, area along Guy Gulch, about 75 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8034,-105.3673,WGS 1984) With Pinus ponderosa, Pediocactus simpsonii, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: CAS(121) , d: CDA(120) , d: COLO(122) , d: JCOS(115) )

Field Notes: Coll. No. 2938.1, 6 Jun 2023.

Name List: Alyssum simplex

2938.1 Alyssum simplex Rudolphi. Douglas Mountain Study Area, area along Guy Gulch, about 75 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.6 km. northwest of the GNIS location of Golden. (39.8034,-105.3673,WGS 1984) With Pinus ponderosa, Physaria montana, Pediocactus simpsonii, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 2939, 6 Jun 2023.

Name List: Acer glabrum

2939. Acer glabrum Torr. Douglas Mountain Study Area, area along Guy Gulch, about 100 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.7 km. northwest of the GNIS location of Golden. (39.8036,-105.3674,WGS 1984) Off the east side of a small ridge, also here, Collinsia parviflora on sunny ground around the maple. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , d: CDA(120) , d: JCOS(115) )

Coll. No. 2939, Acer glabrum im bloom.

Field Notes: Coll. No. 2939.1, 6 Jun 2023.

Name List: Collinsia parviflora

2939.1 Collinsia parviflora Lindl. Douglas Mountain Study Area, area along Guy Gulch, about 100 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.7 km. northwest of the GNIS location of Golden. (39.8036,-105.3674,WGS 1984) With Juniperus scopulorum, Artemisia frigida, Eriogonum jamesii, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) )

Field Notes: Coll. No. 2940, 6 Jun 2023.

Name List: Harbouria trachypleura

2940. Harbouria trachypleura (A. Gray) J.M. Coult. & Rose. Douglas Mountain Study Area, area along Guy Gulch, about 80 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.7 km. northwest of the GNIS location of Golden. (39.8036,-105.3677,WGS 1984) Nose of small southeast plunging ridge, with Heterotheca villosa and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: CS(124) , d: JCOS(115) )

Field Notes: Coll. No. 2941, 6 Jun 2023.

Name List: Senecio integerrimus

2941. Senecio integerrimus Nutt. leaves toothed. Douglas Mountain Study Area, area along Guy Gulch, about 80 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.7 km. northwest of the GNIS location of Golden. (39.8036,-105.3678,WGS 1984) Nose of small southeast plunging ridge, with Juniperus scopulorum, Pediocactus simpsonii, Mertensia lanceolata, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: UCR(119) , d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 2942, 6 Jun 2023.

Name List: Maianthemum racemosum ssp. amplexicaule

2942. Maianthemum racemosum (L.) Link ssp. amplexicaule (Nutt.) LaFrankie. Douglas Mountain Study Area, area along Guy Gulch, about 75 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8036,-105.3679,WGS 1984) Nose of small southeast plunging ridge, in deep soil under Juniperus scopulorum, with Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2942, Maianthemum racemosum ssp. amplexicaule.

Field Notes: Coll. No. 2942.1, 6 Jun 2023.

Name List: Mertensia lanceolata

2942.1 Mertensia lanceolata (Pursh) DC. Douglas Mountain Study Area, area along Guy Gulch, about 75 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8036,-105.3679,WGS 1984) Nose of small southeast plunging ridge, in deep soil under Juniperus scopulorum, with Ribes cereum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 2943, 6 Jun 2023.

Name List: Erigeron vetensis

2943. Erigeron vetensis Rydb. Douglas Mountain Study Area, area along Guy Gulch, about 100 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8038,-105.3679,WGS 1984) Nose of small southeast plunging ridge, with Pediocactus simpsonii, Eriogonum jamesii, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , d: EIU(126) , d: JCOS(115) )

Coll. No. 2943, Erigeron vetensis.

Field Notes: Coll. No. 2944, 6 Jun 2023.

Name List: Astragalus shortianus

2944. Astragalus shortianus [Nutt. ex] Torr. & A.Gray. This collection is two plants that each have been split in two, plus various parts from other plants in this little colony. Douglas Mountain Study Area, area along Guy Gulch, about 120 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8040,-105.3678,WGS 1984) Nose of small southeast plunging ridge. Seems to be arranged in little colonies of 5-6 plants. Open grassy slope with some Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2945, 6 Jun 2023.

Name List: Microsteris gracilis

2945. Microsteris gracilis (Douglas ex Hook.) Greene. Douglas Mountain Study Area, area along Guy Gulch, about 160 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8044,-105.3680,WGS 1984) Nose of small southeast plunging ridge, with Heterotheca villosa, Ribes cereum, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2945, Microsteris gracilis.

Field Notes: Coll. No. 2945.1, 6 Jun 2023.

Name List: Draba nemorosa

2945.1 Draba nemorosa L. Douglas Mountain Study Area, area along Guy Gulch, about 160 m. above the road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8044,-105.3680,WGS 1984) Nose of small southeast plunging ridge, with Heterotheca villosa, Ribes cereum, and Cercocarpus montanus. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: UCR(119) , d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 2946, 6 Jun 2023.

Name List: Poa pratensis

2946. Poa pratensis L. Douglas Mountain Study Area, area along Guy Gulch, about 220 m. above the county road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8048,-105.3679,WGS 1984) On a small southeast-facing ridge, with Artemisia dracunculus, Sedum lanceolatum, and Eriogonum jamesii. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 2947, 6 Jun 2023.

Name List: Antennaria rosea

2947. Antennaria rosea Greene. Douglas Mountain Study Area, area along Guy Gulch, about 210 m. above the county road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8048,-105.3680,WGS 1984) 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2948, 6 Jun 2023.

Name List: Salix scouleriana

2948. Salix scouleriana Barratt ex Hook. Floral bracts black; young stamens red. Douglas Mountain Study Area, area along Guy Gulch, about 315 m. above the county road, north side of Jefferson County Road 70 and near western boundary, 17.8 km. northwest of the GNIS location of Golden. (39.8054,-105.3676,WGS 1984) Openings in forest, east-facing slope below top of ridge, bottom of rock outcrop, well above stream, with Ribes cereum, Jamesia americana, and Acer glabrum. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2948, Salix scouleriana.

Field Notes: Coll. No. 2949, 6 Jun 2023.

Name List: Carex occidentalis

2949. Carex occidentalis L. H. Bailey. Caespitose. Douglas Mountain Study Area, area along Guy Gulch, about 325 m. above the county road, north side of Jefferson County Road 70 and near western boundary, 17.85 km. northwest of the GNIS location of Golden. (39.8056,-105.3677,WGS 1984) With Acer glabrum, just below a rock outcrop 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2950, 6 Jun 2023.

Name List: Penstemon virens

2950. Penstemon virens Pennell ex Rydb. Flowers just beginning to open. Douglas Mountain Study Area, area along Guy Gulch, about 340 m. above the county road, north side of Jefferson County Road 70 and near western boundary, 17.9 km. northwest of the GNIS location of Golden. (39.8058,-105.3678,WGS 1984) Open rocky slope. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: COLO(122) , CAS716692^‡ , JCOSs.n. )

Field Notes: Coll. No. 2951, 6 Jun 2023.

Name List: Osmorhiza depauperata

2951. Osmorhiza depauperata Phil. Along stream tributary to Guy Gulch, about 310 m. north of County Road 70, near the western boundary of the study area, 17.7 km. northwest of the GNIS location of Golden. (39.8050,-105.3671,WGS 1984) Shaded floor of small gulch. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: JCOS(115) )

Coll. No. 2951, Osnorhiza depauperata.

Field Notes: Coll. No. 2952, 6 Jun 2023.

Name List: Androsace septentrionalis

2952. Androsace septentrionalis L. Bracts lanceolate. Along stream tributary to Guy Gulch about 90 m. north of County Road 70, near the western boundary of the study area, 17.7 km. northwest of the GNIS location of Golden. (39.8033,-105.3671,WGS 1984) Sunny spot, on shoulder of abandoned stream bar, with Rubus deliciosus and Bromus inermis. 6/6/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: JCOS(115) )

Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Blitum nuttallianum. Field Notes: Coll. No. 2953, 7 Jun 2023.

Name List: Blitum nuttallianum

2953. Blitum nuttallianum Schult. Southwest parkway at 900 5th Street, Golden. (39.7609,-105.2286,WGS 1984) Adventive “weed” in an area planted with purchased seed of Colorado native plants. 6/7/2023 Golden, Jefferson County, Colorado. (d: CS(124) , KHD ^‡ )

Coll. No. 2953, Blitum nuttallianum.

Inflorescence of Coll. No. 2953, Blitum nuttallianum.

Field Notes: Coll. No. 2954, 13 Jun 2023.

Name List: Bromus tectorum

2954. Bromus tectorum L. Weed: CO DofA, List: C. Southwest corner of Stonebridge HOA common areas, 4.33 km. south of the GNIS location of Golden. (39.7256,-105.2213,WGS 1984) 6/13/2023 Stonebridge Homeowners Association, Jefferson County, Colorado. (Discarded. )

Field Notes: Coll. No. 2955, 14 Jun 2023.

Name List: Salix � fragilis

2955. Salix � fragilis L. Trees, huge trunks, branches break easily, ♀ catkins. Along the creek in Guy Gulch, 115 m. southwest of the ranch house, 15.9 km. northwest of the GNIS location of Golden. (39.7943,-105.3549,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2955, Salix � fragilis.

Field Notes: Coll. No. 2956, 14 Jun 2023.

Name List: Salix lasiandra var. caudata

2956. Salix lasiandra Benth. var. caudata (Nutt.) Sudw. Staminate catkins, small multi-trunk. Along the creek in Guy Gulch, 95 m. southwest of the Centennial Ranch house, 2.48 km. south of Mt. Tom, 12.2 km. (geodesic) northwest of the GNIS location of Golden. (39.7942,-105.3549,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: KHD(117) , d: COLO(122) , d: CS(124) , d: JCOS(115) )

Coll. No. 2956, Salix lasiandra var. caudata.

Catkin of Coll. No. 2956, Salix lasiandra var. caudata.

Comments: 12/8/2023, Coll. No. 2956, 14 Jun 2023, characters observed: Shrub, tall, multistem, > 1 m.; Stems, current year's yellow-brown, shiny (like shellacked), prior year's medium brown; Leaves, petiole, 2-3 mm., without glands, blade, elliptic, 52 mm. × 18 mm. wide, margin, serrulate, tip, acute to acuminate, glabrous; Catkins, staminate, peduncles, 9-14 mm., leafy, catkin, 40 mm., elongate; Floral bracts, yellowish-tan, tips, eglandular, rounded to erose?, proximally velutinous (short wavy); Stamens, 5-6; Filaments, not hairy.

Field Notes: Coll. No. 2957, 14 Jun 2023.

Name List: Ranunculus repens

2957. Ranunculus repens L. Semi-aquatic; rooting at nodes, basal leaves compound; petals 11-12 mm. × 9 mm. wide, yellow. Wet area from small creek entering Guy Gulch from the northeast, southwest side of County Road 70, 107 m. southwest of the ranch house, 15.8 km. northwest of the GNIS location of Golden. (39.7942,-105.3546,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2957, Ranunculus repens.

Field Notes: Coll. No. 2958, 14 Jun 2023.

Name List: Rumex acetosella

2958. Rumex acetosella L. Beside small creek entering Guy Gulch from the northeast, southwest side of County Road 70, 107 m. southwest of the ranch house, 15.8 km. northwest of the GNIS location of Golden. (39.7942,-105.3546,WGS 1984) Open, sunny field with short grasses. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: REGIS(128) , d: JCOS(115) )

Field Notes: Coll. No. 2959, 14 Jun 2023.

Name List: Salix bebbiana

2959. Salix bebbiana Sarg. Pistillate catkins, young stems reddish. Beside the creek of Guy Gulch, southwest side of County Road 70, 96 m. southwest of the ranch house, 2.48 km. south of Mt. Tom, 12.2 km. (geodesic) northwest of the GNIS location of Golden. (39.7941,-105.3548,WGS 1984) Bank of creek. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2959, Salix bebbiana.

Catkin of Coll. No. 2959, Salix bebbiana.

Comments: 12/7/2023, Coll. No. 2959, 14 Jun 2023, characters observed: Shrub, multi-stem, > 1 m.; Stems, not pruinose, current year reddish brown; Leaves, alternate, elliptic, 20 mm. × 9 mm. wide, petiole 2-3 mm., pubescent both sides; Catkins, pistillate, 35 mm., open, loosely flowered, floral bracts, tan, stipe, 3 mm.; Capsules, 6 mm., pubescent.

Field Notes: Coll. No. 2959.1, 14 Jun 2023.

Name List: Equisetum arvense

2959.1 Equisetum arvense L. In the creek of Guy Gulch, southwest side of County Road 70, 125 m. southwest of the ranch house, 15.8 km. northwest of the GNIS location of Golden. (39.7941,-105.3548,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (JCOS , UCR307004^‡ , Unknown )

Field Notes: Coll. No. 2960, 14 Jun 2023.

Name List: Antennaria rosea

2960. Antennaria rosea Greene. Southwest side of the creek and County Road 70, 180 m. southwest of the ranch house, 15.9 km. northwest of the GNIS location of Golden. (39.7936,-105.3548,WGS 1984) Lowest northeast-facing hill slope, edge of forest. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: CAS(121) , d: JCOS(115) )

Field Notes: Coll. No. 2961, 14 Jun 2023.

Name List: Antennaria parvifolia

2961. Antennaria parvifolia Nutt. Rose, but tall, large involucre and corolla. Southwest side of the creek and County Road 70, 200 m. southwest of the ranch house, 15.8 km. northwest of the GNIS location of Golden. (39.7934,-105.3541,WGS 1984) Lowest northeast-facing hill slope, edge of forest. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: Unknown )

Field Notes: Coll. No. 2962, 14 Jun 2023.

Name List: Salix boothii

2962. Salix boothii Dorn. Multi-stem, catkin bracts dark brown. On the bank of the creek in Guy Gulch, 155 m. south of the Centennial Ranch house, 2.56 km. south of Mt. Tom, 12.1 km. (geodesic) northwest of the GNIS location of Golden. (39.7934,-105.3538,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2962, Salix boothii.

Catkin of Coll. No. 2962, Salix boothii.

Comments: 12/7/2023, Coll. No. 2962, 14 June 2023, characters observed: Shrub, tall, multi-stem; Height, > 1 m.; Stems, not pruinose, current year's near black, prior year's grayish to yellowish; Leaves, alternate, petiole, 4-5 mm., without glands, blade, 42 mm. × 19 mm. wide, oblong to ovate, surfaces glabrate (hairs velutinous (short, soft, curvy)), margin serrulate; Catkins, pistillate, leafy pedunculate, 28 mm. × 10 mm. wide, elongate, densely flowered; Floral bracts, 1.5 mm., black, villous; Stipe, 0.5 mm.; Capsules, 4.5-6.5 mm., slender, pubescent on proximal margins; Style, 1.7-1.8 mm.

Field Notes: Coll. No. 2963, 14 Jun 2023.

Name List: Fragaria vesca

2963. Fragaria vesca L. Southwest side of the creek and County Road 70, 220 m. southwest of the ranch house, 15.8 km. northwest of the GNIS location of Golden. (39.7933,-105.3540,WGS 1984) Stream terrace in open shade under Douglas fir. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2964, 14 Jun 2023.

Name List: Viola canadensis

2964. Viola canadensis L. Southwest side of the creek and County Road 70, 237 m. south of the ranch house, 15.7 km. northwest of the GNIS location of Golden. (39.7932,-105.3537,WGS 1984) In the shade on a stream terrace. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , d: REGIS(128) , d: JCOS(115) )

Field Notes: Coll. No. 2965, 14 Jun 2023.

Name List: Barbarea vulgaris

2965. Barbarea vulgaris R. Br. Southwest side of the creek and County Road 70, 326 m. south southeast of the ranch house, 15.6 km. northwest of the GNIS location of Golden. (39.7927,-105.3529,WGS 1984) Partly sunny location amid hillside brush and floodplain trees. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: REGIS(128) , d: JCOS(115) )

Field Notes: Coll. No. 2966, 14 Jun 2023.

Name List: Juniperus scopulorum

2966. Juniperus scopulorum Sarg. Small tree, 2.5-3 m.; leaf barely overlaps that immediately above, margin entire, surface gland long; no fruit. Southwest side of the creek and County Road 70, 326 m. south southeast of the ranch house, 15.6 km. northwest of the GNIS location of Golden. (39.7927,-105.3528,WGS 1984) Edge of flood plain, between hillslope brush and flood plain trees. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , d: EIU(126) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2967, 14 Jun 2023.

Name List: Delphinium nuttallianum

2967. Delphinium nuttallianum Pritz. Perennial from a cluster of tuber-like roots; sepals blue-purple; follicles flaring outward. Southwest side of the creek and County Road 70, 503 m. south southeast of the ranch house, just north of a small gulch, 15.5 km. northwest of the GNIS location of Golden. (39.7917,-105.3519,WGS 1984) Open northeast-facing slope. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: REGIS(128) , d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 2968, 14 Jun 2023.

Name List: Micranthes rhomboidea

2968. Micranthes rhomboidea (Greene) Small. Mouth of a small gulch tributary to Guy Gulch, southwest side of the creek and County Road 70, 530 m. south southeast of the ranch house, 15.5 km. northwest of the GNIS location of Golden. (39.7915,-105.3520,WGS 1984) 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: UCR(119) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2968.1, 14 Jun 2023.

Name List: Clematis grosseserrata

2968.1 Clematis grosseserrata (Rydb.) Ackerfield. Mouth of a small gulch tributary to Guy Gulch, southwest side of the creek and County Road 70, 530 m. south southeast of the ranch house, 15.5 km. northwest of the GNIS location of Golden. (39.7915,-105.3520,WGS 1984) Shaded floor of the drainage, with Micranthes rhomboidea. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: JCOS(115) , KHD )

Coll. No. 2968.1, Clematis grosseserrata.

Field Notes: Coll. No. 2969, 14 Jun 2023.

Name List: Physaria vitulifera

2969. Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. Few plants here; collection split in half. Mouth of a small gulch tributary to Guy Gulch, southwest side of the creek and County Road 70, 530 m. south southeast of the ranch house, 15.5 km. northwest of the GNIS location of Golden. (39.7914,-105.3520,WGS 1984) Open southeast-facing rocky slope 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 2970, 14 Jun 2023.

Name List: Astragalus parryi

2970. Astragalus parryi A. Gray. Developing fruit is sickle-shaped, villous. Steep slope above Guy Gulch, southwest side of the creek and County Road 70, 490 m. south southeast of the ranch house, 15.5 km. northwest of the GNIS location of Golden. (39.7917,-105.3522,WGS 1984) Steep slope, sunny, southeast aspect. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 2970, Astragalus parryi

Comments: 11/27/2023, Coll. No. 2970, 14 June 2023, characters observed: Perennial herb, to 20 cm., caulescent, hairs basifixed; Stem, distal spreading hairs; Stipules, free; Leaf, compound, leaflets, 19#; Calyx, not inflated in fruit; Flowers, white; Fruit,, in a loose raceme, stipe, 0.3 mm., 14 mm. × 5.5 mm. wide, arcuate, obcompressed ?? (not seen in dried specimen), white villous.

Field Notes: Coll. No. 2971, 14 Jun 2023.

Name List: Oenothera cespitosa ssp. macroglottis

2971. Oenothera cespitosa Nutt. ssp. macroglottis (Rydb.) W.L. Wagner. Flowers white, fading pink. Steep slope above Guy Gulch, southwest side of the creek and County Road 70, 406 m. south southeast of the ranch house, 15.6 km. (planar) northwest of the GNIS location of Golden. (39.7922,-105.3527,WGS 1984) Steep rocky hillside, below a rock outcrop and an Acer glabrum 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) )

Coll. No. 2971, Oenothera cespitosa ssp. macroglottis

Field Notes: Coll. No. 2972, 14 Jun 2023.

Name List: Anaphalis margaritacea

2972. Anaphalis margaritacea (L.) Bentham & Hooker. Steep slope above Guy Gulch, southwest side of the creek and County Road 70, 380 m. south southeast of the ranch house, 15.6 km. (planar) northwest of the GNIS location of Golden. (39.7923,-105.3530,WGS 1984) Very steep slope among Douglas fir. 6/14/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: OBI(118) )

Coll. No. 2972, Anaphalis margaritacea

Coll. No. 2972, Anaphalis margaritacea.

Field Notes: Coll. No. 2973, 15 Jun 2023.

Name List: Melilotus officinalis

2973. Melilotus officinalis (L.) Lam. New Golden city park (construction in 2021 and 2022) near the intersection of 23rd Street and Vernon Drive, 1.75 km. southeast of the GNIS location of Golden. (39.7488,-105.2080,WGS 1984) Naturalized in the park, which was fallow for many years and now is being weeded by volunteers to keep the park pesticide-free. 6/15/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CofG(125) , d: UCR(119) , d: EIU(126) , d: OBI(118) )

Field Notes: Coll. No. 2974, 15 Jun 2023.

Name List: Dactylis glomerata

2974. Dactylis glomerata L. New Golden city park (construction in 2021 and 2022) near the intersection of 23rd Street and Vernon Drive, 1.75 km. southeast of the GNIS location of Golden. (39.7490,-105.2080,WGS 1984) Naturalized in the park, which was fallow for many years and now is being weeded by volunteers to keep the park pesticide-free. 6/15/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CofG(125) , d: REGIS(128) , CS )

Field Notes: Coll. No. 2975, 15 Jun 2023.

Name List: Trifolium repens

2975. Trifolium repens L. Creeping and rooting at nodes; leaves glabrous; heads pedunculate; many flowers per head. New Golden city park (construction in 2021 and 2022) near the intersection of 23rd Street and Vernon Drive, 1.75 km. southeast of the GNIS location of Golden. (39.7489,-105.2080,WGS 1984) Naturalized in the park, which was fallow for many years and now is being weeded by volunteers to keep the park pesticide-free. 6/15/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: REGIS(128) , d: EIU(126) , d: CofG(125) , CS )

Field Notes: Coll. No. 2977, 19 Jun 2023.

Name List: Sphaeralcea coccinea

2977. Sphaeralcea coccinea (Nutt.) Rydb. Petal color flaming orange (#ED6332), fading blue-purple. City-owned parcel north of “Eagle Ridge” between CSM Survey Field and US Highway 6, about 50 m. northwest of the Kinney Run Trail, 2.38 km. (geodesic) south of the GNIS location of Golden (39.7344,-105.2163,WGS 1984) Common in this field, drier patch dominated by Artemisia ludoviciana, stiff clay soil. 6/19/2023 Eagle Ridge, Tract A, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: COLO(122) , CofG )

Field Notes: Coll. No. 2978, 19 Jun 2023.

Name List: Crepis occidentalis ssp. costata

2978. Crepis occidentalis Nutt. ssp. costata (A. Gray) Babcock & Stebbins. City-owned parcel north of “Eagle Ridge” between CSM Survey Field and US Highway 6, about 50 m. northwest of the Kinney Run Trail, 2.38 km. (geodesic) south of the GNIS location of Golden (39.7344,-105.2163,WGS 1984) Common in this field of remnant mixed-grass prairie, drier patch dominated by Artemisia ludoviciana, stiff clay soil. Subsp. costata if infraspecific names are to be applied. 6/19/2023 Eagle Ridge, Tract A, Jefferson County, Colorado. (CAS716683^‡ , CDA56580^‡ , CS202047^‡ , UCR307100^‡ )

Field Notes: Coll. No. 2979, 19 Jun 2023.

Name List: Nassella viridula

2979. Nassella viridula (Trin.) Barkworth. In bloom. City-owned parcel north of “Eagle Ridge” between CSM Survey Field and US Highway 6, about 70 m. northwest of the Kinney Run Trail, 2.37 km. (geodesic) south of the GNIS location of Golden. (39.7345,-105.2164,WGS 1984) Common in this field, drier patch dominated by Artemisia ludoviciana, stiff clay soil. 6/19/2023 Eagle Ridge, Tract A, Jefferson County, Colorado. (d: CS(124) , d: CDA(120) , d: EIU(126) , d: OBI(118) )

Field Notes: Coll. No. 2980, 19 Jun 2023.

Name List: Linum perenne

2980. Linum perenne L. City-owned parcel north of “Eagle Ridge” between CSM Survey Field and US Highway 6, about 70 m. northwest of the Kinney Run Trail, 2.37 km. (geodesic) south of the GNIS location of Golden. (39.7345,-105.2164,WGS 1984) Common in this field of remnant mixed-grass prairie, drier patch dominated by Artemisia ludoviciana, stiff clay soil. 6/19/2023 Eagle Ridge, Tract A, Jefferson County, Colorado. (d: COLO(122) , d: EIU(126) , d: REGIS(128) , CDA )

Field Notes: Coll. No. 2981, 19 Jun 2023.

Name List: Linaria dalmatica

2981. Linaria dalmatica (L.) Mill. Weed: CO DofA, List: B. Perennial. City-owned parcel north of “Eagle Ridge” between CSM Survey Field and US Highway 6, about 100 m. northwest of the Kinney Run Trail, 2.35 km. (geodesic) south of the GNIS location of Golden. (39.7346,-105.2168,WGS 1984) Common in this field of remnant mixed-grass prairie, drier patch dominated by Artemisia ludoviciana, stiff clay soil. Colorado Noxious Weed List B. iNaturalist: 192499979. EDDMaps: 11644454. 6/19/2023 Eagle Ridge, Tract A, Jefferson County, Colorado. (d: CofG(125) , d: UCR(119) , d: CDA(120) , d: OBI(118) )

Coll. No. 2981, Linaria dalmatica.

Field Notes: Coll. No. 2982, 19 Jun 2023.

Name List: Linum pratense

2982. Linum pratense (Norton) Small. Annual, small blue flowers, short styles. Eastern, or lower, parcel of the survey field, within Golden city limits, 175 m. northwest of the Kinney Run Trail, 2.31 km. south of the GNIS location of Golden. (39.7349,-105.2175,WGS 1984) Shoulder of ridge, southeast aspect. Also collected here, Astragalus drummondii and Delphinium carolinium ssp. virescens. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , KHD ^‡ )

Coll. No. 2982, Linum pratense.

Field Notes: Coll. No. 2983, 19 Jun 2023.

Name List: Delphinium carolinianum ssp. virescens

2983. Delphinium carolinianum Walter ssp. virescens (Nutt.) R.E. Brooks. Eastern, or lower, parcel of the survey field, within Golden city limits, 175 m. northwest of the Kinney Run Trail, 2.31 km. south of the GNIS location of Golden. (39.7349,-105.2175,WGS 1984) Shoulder of ridge, southeast aspect, with Coll. No. 2982, Linum pratense 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , d: REGIS(128) , CDA )

Field Notes: Coll. No. 2984, 19 Jun 2023.

Name List: Astragalus drummondii

2984. Astragalus drummondii Dougl. ex Hook. Perennial, large upright Astragalus with white flowers. Eastern, or lower, parcel of the survey field, within Golden city limits, 175 m. northwest of the Kinney Run Trail, 2.31 km. south of the GNIS location of Golden. (39.7349,-105.2175,WGS 1984) Common, shoulder of ridge, southeast aspect, with Linum pratense and Delphinium carolinianum ssp. virescens. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: CS(124) , d: UCR(119) , d: EIU(126) , REGIS )

Field Notes: Coll. No. 2985, 19 Jun 2023.

Name List: Hesperostipa comata

2985. Hesperostipa comata (Trin. & Rupr.) Barkworth. In bloom. Eastern, or lower, parcel of the survey field, within Golden city limits, 190 m. northwest of the Kinney Run Trail, 2.30 km. south of the GNIS location of Golden. (39.7350,-105.2176,WGS 1984) Near top of small ridge, with Alyssum simplex, Pediomelum tenuiflorum, Linaria dalmatica, Agropyron cristatum, Bromus japonicus, and Nassella viridula. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (CAS716691^‡ , CS202043^‡ , EIU , UCR308391^‡ )

Field Notes: Coll. No. 2986, 19 Jun 2023.

Name List: Agropyron cristatum

2986. Agropyron cristatum (L.) Gaertn. Few in bloom. Eastern, or lower, parcel of the survey field, within Golden city limits, 215 m. northwest of the Kinney Run Trail, 2.28 km. south of the GNIS location of Golden. (39.7351,-105.2179,WGS 1984) Top of ridge in disturbed mixed-grass prairie. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: CS(124) , d: UCR(119) , d: COLO(122) , d: OBI(118) )

Field Notes: Coll. No. 2987, 19 Jun 2023.

Name List: Koeleria macrantha

2987. Koeleria macrantha (Ledeb.) Schult. In bloom. Eastern, or lower, parcel of the survey field, within Golden city limits, 232 m. northwest of the Kinney Run Trail, 2.27 km. south of the GNIS location of Golden. (39.7352,-105.2181,WGS 1984) Just on the north side of a small ridge. Mixed grass prairie, highest Great Plains at base of Rocky Mountain Front Range. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (CAS716690^‡ , CDA56575^‡ , CofGs.n. , FLD )

Field Notes: Coll. No. 2988, 19 Jun 2023.

Name List: Calochortus gunnisonii

2988. Calochortus gunnisonii S. Watson. First flowers open. Eastern, or lower, parcel of the survey field, within Golden city limits, 247 m. northwest of the Kinney Run Trail, 2.26 km. south of the GNIS location of Golden. (39.7353,-105.2182,WGS 1984) Two-thirds of way up the north-facing slope, with Astragalus drummondii, Sphaeralcea coccinea, Hesperostipa comata, and Nassella viridula. Mixed grass prairie, highest Great Plains at base of Rocky Mountain Front Range. 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: EIU(126) , d: COLO(122) , d: REGIS(128) , CDA )

Coll. No. 2988, Calochortus gunnisonii.

Field Notes: Coll. No. 2989, 19 Jun 2023.

Name List: Astragalus agrestis

2989. Astragalus agrestis Douglas ex G. Don. Flowers and developing fruit. Eastern, or lower, parcel of the survey field, within Golden city limits, 247 m. northwest of the Kinney Run Trail, 2.24 km. south of the GNIS location of Golden. (39.7355,-105.2186,WGS 1984) Mixed grass prairie, highest Great Plains at base of Rocky Mountain Front Range. Lower north-facing slope, with Achillea millefolium, Tragopogon dubius, Sphaeralcea coccinea, Linaria dalmatica, Bromus inermis, and Koeleria macrantha, 6/19/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: COLO(122) , d: EIU(126) , d: CS(124) , CDA )

Coll. No. 2989, Astragalus agrestis.

Field Notes: Coll. No. 2990, 19 Jun 2023.

Name List: Apocynum �floribundum

2990. Apocynum �floribundum Greene. Leaves spreading to ascending; corolla >2× calyx, lobes spreading to reflexed. Between the 6th Avenue Trail and the creek of Deadman Gulch, 2.24 km. (geodesic) south of GNIS location of Golden (39.7359,-105.2150,WGS 1984) Highly disturbed habitat between trails. 6/19/2023 Deadman Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CDA(120) , d: CAS(121) , d: OBI(118) )

Field Notes: Coll. No. 2991, 19 Jun 2023.

Name List: Rhamnus cathartica

2991. Rhamnus cathartica L. Weed: CO DofA, List: Unlisted. One plant with 22 stems, rooted in bank of creek. Also locally called “Kinney Run,” in a triangular city parcel along the projection of Illinois Street below US Highway 6. (39.7373,-105.2151,WGS 1984) With Salix exigua and Prunus virginiana. Same plant as Coll. No. 2925. EDDMaps: 11613828. 6/19/2023 Deadman Gulch, Jefferson County, Colorado. (d: CAS(121) , d: CDA(120) , d: UCR(119) , d: OBI(118) )

Field Notes: Coll. No. 2992, 23 June 2023.

Name List: Erigeron flagellaris

2992. Erigeron flagellaris A. Gray. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope just a few meters west of the line shack, 1.12 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3637,WGS 1984) Open grassy slope with Rumex acetosella, Cerastium arvense, Microsteris gracilis, and Bouteloua gracilis. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (JCOSs.n. , KHD87875^‡ , OBI^‡ , UCR232577^‡ )

Field Notes: Coll. No. 2993, 23 June 2023.

Name List: Cerastium arvense ssp. strictum

2993. Cerastium arvense L. ssp. strictum Gaudin. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope just a few meters north of the line shack, 1.12 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3636,WGS 1984) Also collected here: Achillea millefolium, Artemisia frigida, Physaria montana, Microsteris gracilis, and Boutelous gracilis. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: CDA(120) , d: CAS(121) , d: CS(124) , d: JCOS(115) )

Field Notes: Coll. No. 2994, 23 June 2023.

Name List: Microsteris gracilis

2994. Microsteris gracilis (Douglas ex Hook.) Greene. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope just a few meters north of the line shack, 1.12 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3636,WGS 1984) Also collected here: Achillea millefolium, Artemisia frigida, Physaria montana, Cerastium arvense, and Boutelous gracilis. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 2995, 23 June 2023.

Name List: Harbouria trachypleura

2995. Harbouria trachypleura (A. Gray) J.M. Coult. & Rose. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 30 m. northwest of the line shack, 1.13 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3638,WGS 1984) Rocky hillslope with Juniperus communis var. depressa, Pinus ponderosa, and Rubus deliciosus. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: CAS(121) , d: EIU(126) , d: OBI(118) )

Field Notes: Coll. No. 2996, 23 June 2023.

Name List: Rubus deliciosus

2996. Rubus deliciosus Torr. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 28 m. northwest of the line shack, 1.14 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3639,WGS 1984) Open slope, southeast aspect, with Juniperus communis var. depressa, Pinus ponderosa, and Potentilla fissa. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: EIU(126) , d: CAS(121) , d: JCOS(115) )

Field Notes: Coll. No. 2997, 23 June 2023.

Name List: Juniperus communis var. depressa

2997. Juniperus communis L. var. depressa Pursh. Large mature shrub, 3-4 m. diameter, though degenerate in the middle. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 32 m. west northwest of the line shack, 1.14 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3639,WGS 1984) Open southwest-facing slope between Pinus ponderosa with Penstemon secundiflorus, Potentilla fissa, and Rubus deliciosus. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (CAS718155^‡ , JCOSs. n. , OBI^‡ , REGIS )

Field Notes: Coll. No. 2998, 23 June 2023.

Name List: Potentilla fissa

2998. Potentilla fissa Nutt. ex Torr. & A.Gray. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 40 m. west northwest of the line shack, 1.15 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3640,WGS 1984) Open southwest-facing slope between Pinus ponderosa with Juniperus communis var. depressa, Penstemon secundiflorus, and Rubus deliciosus. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CAS(121) , d: CDA(120) , d: OBI(118) )

Field Notes: Coll. No. 2999, 23 June 2023.

Name List: Penstemon secundiflorus

2999. Penstemon secundiflorus Benth. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 40 m. west northwest of the line shack, 1.15 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3640,WGS 1984) Open southwest-facing slope between Pinus ponderosa with Juniperus communis var. depressa, Potentilla fissa, and Rubus deliciosus. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , CS )

Field Notes: Coll. No. 3000, 23 June 2023.

Name List: Maianthemum stellatum

3000. Maianthemum stellatum (L.) Link. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on the southwest-facing slope 80 m. south of the line shack, 1.16 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8121,-105.3637,WGS 1984) Under Douglas fir on upper bank of creek with Mertensia lanceolata. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , d: CS(124) , d: EIU(126) , d: JCOS(115) )

Coll. No. 3000, Maianthemum stellatum.

Field Notes: Coll. No. 3001, 23 June 2023.

Name List: Senecio integerrimus

3001. Senecio integerrimus Nutt. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, in a flat area 143 m. southwest of the line shack, 1.24 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8119,-105.3646,WGS 1984) Open ground amid lodgepole pines. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , d: CAS(121) , CDA )

Field Notes: Coll. No. 3002, 23 June 2023.

Name List: Mertensia lanceolata

3002. Mertensia lanceolata (Pursh) DC. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, on a stream bank 80 m. south of the line shack, 1.16 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8121,-105.3637,WGS 1984) Shaded shoulder of stream bank with Pinus ponderosa. Also collected here: Maianthemum stellatum. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: OBI(118) , d: CDA(120) , d: JCOS(115) )

Field Notes: Coll. No. 3003, 23 June 2023.

Name List: Ribes cereum

3003. Ribes cereum Douglas. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, in a pile of rocks 25 m. southwest of the line shack, 1.14 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8127,-105.3638,WGS 1984) Perhaps an artificial pile of rocks, with Geranium caespitosum. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: CDA(120) , d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 3004, 23 June 2023.

Name List: Geranium caespitosum

3004. Geranium caespitosum James. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, in a pile of rocks 25 m. southwest of the line shack, 1.14 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8127,-105.3638,WGS 1984) Perhaps an artificial pile of rocks, possibly containing a spring, with Ribes cereum. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , FLD , d: JCOS(115) )

Coll. No. 3004, Geranium caespitosum.

Field Notes: Coll. No. 3005, 23 June 2023.

Name List: Arabis pycnocarpa var. pycnocarpa

3005. Arabis pycnocarpa M. Hopkins var. pycnocarpa. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 28 m. south of the line shack, 1.13 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8126,-105.3636,WGS 1984) Open grasses. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (CS )

Field Notes: Coll. No. 3006, 23 June 2023.

Name List: Stellaria longipes ssp. longipes

3006. Stellaria longipes Goldie ssp. longipes. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 35 m. northeast of the line shack, 1.09 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3634,WGS 1984) In still water beside creek, with Portulaca oleracea and Noccaea fendleri. Same as Coll. No. 3145. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) )

Name List: Undetermined

3006.1 Undetermined. (39.8131,-105.3634,WGS 1984) In still water beside creek, with Portulaca oleracea and Noccaea fendleri 6/23/2023 Guy Gulch, Jefferson County, Colorado.

Name List: Undetermined

3006.2 Undetermined. (39.8131,-105.3634,WGS 1984) In still water beside creek, with Portulaca oleracea and Noccaea fendleri 6/23/2023 Guy Gulch, Jefferson County, Colorado.

Field Notes: Coll. No. 3007, 23 June 2023.

Name List: Carex inops ssp. heliophila

3007. Carex inops L. H. Bailey ssp. heliophila (Mack.) Crins. Meadow north of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 20 m. southwest of the line shack, 1.13 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8127,-105.3637,WGS 1984) Growing on a small ranch road berm. 6/23/2023 Guy Gulch, Jefferson County, Colorado. (CAS716688^‡ , COLO , CS202099^‡ , FLD )

Field Notes: Coll. No. 3008, 29 Jun 2023.

Name List: Securigera varia

3008. Securigera varia (L.) Lassen. On the bank of the Welch Ditch near the south bridge and stairs down to 24th Street, 1.39 km. southeast of the GNIS location of Golden. (39.7479,-105.2083,WGS 1984) With Bromus inermis and Fraxinus pensylvanica. There is also a dense infestation in the watercourse parallel to 23rd Street. EDDMaps: 11652866. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CofG(125) , d: CS(124) , d: UCR(119) , KHD ^‡ )

Coll. No. 3008, Securigera varia.

Field Notes: Coll. No. 3009, 29 Jun 2023.

Name List: Lathyrus latifolius

3009. Lathyrus latifolius L. Weed: CO DofA, List: Watch. Flower color varies from pink to vivid magenta. In the natural area, up on the slope above Welch Ditch and sidewalk, aligned with extension of 24th Street, 1.39 km. southeast of the GNIS location of Golden. (39.7480,-105.2081,WGS 1984) Full sun on southwest slope. EDDSMapS Record Id 11652895. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CS(124) , d: CofG(125) , d: CDA(120) , KHD ^‡ )

Coll. No. 3009, Lathyrus latifolius.

Field Notes: Coll. No. 3010, 29 Jun 2023.

Name List: Nassella viridula

3010. Nassella viridula (Trin.) Barkworth. In bloom. In the natural area, up on the slope above Welch Ditch and sidewalk, aligned with extension of 24th Street, 1.39 km. southeast of the GNIS location of Golden. (39.7479,-105.2081,WGS 1984) Full sun on southwest slope. May have been planted during park construction. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: Unknown )

Field Notes: Coll. No. 3011, 29 Jun 2023.

Name List: Helianthus pumilus

3011. Helianthus pumilus Nutt. In the natural area of a new city park (construction in 2021 and 2022), up on the slope above Welch Ditch and sidewalk, aligned with extension of 24th Street, 1.39 km. southeast of the GNIS location of Golden. (39.7479,-105.2080,WGS 1984) In bloom. Likely to be native here, other likely natives seen: Opuntia macrorhiza, Comandra umbellata ssp. pallida and Carex inops ssp. heliophila. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: COLO(122) , d: CofG(125) , d: EIU(126) , CAS )

Field Notes: Coll. No. 3011.1, 29 Jun 2023.

Name List: Agropyron cristatum

3011.1 Agropyron cristatum (L.) Gaertn. In the northeast corner of a new city park (construction in 2021 and 2022), along 23rd Street near its intersection with Table Drive, 1.34 km. southeast of the GNIS location of Golden. (39.7490,-105.2080,WGS 1984) Unclear whether presence here predates park construction or was brought in with soil amendment. This area of the park also seriously infested with Lepidium draba. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: REGIS(128) , CofG )

Field Notes: Coll. No. 3012, 29 Jun 2023.

Name List: Elymus canadensis

3012. Elymus canadensis L. Growing on the banks of the watercourse in north-central natural area of the park (construction in 2021 and 2022), along 23rd Street near its intersection with Vernon Drive, 1.33 km. southeast of the GNIS location of Golden. (39.7489,-105.2083,WGS 1984) Not listed in the original seeding mixture. Unclear whether presence here predates park construction, was brought in with soil amendment, or was a contaminant in original mixture used in seeding the park. Probably variety canadensis if infraspecific names are to be applied. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: REGIS(128) , CofG )

Field Notes: Coll. No. 3013, 29 Jun 2023.

Name List: Secale cereale

3013. Secale cereale L. New city park (construction in 2021 and 2022), along the eastern border at watercourse, 1.36 km. southeast of the GNIS location of Golden. (39.7487,-105.2079,WGS 1984) Not native. Not listed in the original seeding mixture. Unclear whether presence here predates park construction, was brought in with soil amendment, or was a contaminant in original mixture used in seeding the park. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: REGIS(128) , d: CofG(125) , CS )

Field Notes: Coll. No. 3014, 29 Jun 2023.

Name List: Lolium multiflorum

3014. Lolium multiflorum Lam. Blades rolled in bud, spikelets edge-wise, florets 8-12, lemma awns 0-6 mm. New city park (construction in 2021 and 2022), just south of bridge along 23rd Street near its intersection with Vernon Drive. 1.32 km. southeast of the GNIS location of Golden. (39.7488,-105.2083,WGS 1984) This area was re-seeded with native grasses, but this common turf grass probably pre-dates park construction. Characters intermediate with L. perenne; perhaps a hybrid. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (CofG , KHD ^‡ )

Coll. No. 3014, Lolium multiflorum.

Field Notes: Coll. No. 3015, 29 Jun 2023.

Name List: Fraxinus pennsylvanica

3015. Fraxinus pennsylvanica Marshall. New city park (construction in 2021 and 2022), rooted in the bank of the Welch Ditch along the southwest boundary. 1.35 km. southeast of the GNIS location of Golden. (39.7483,-105.2084,WGS 1984) Medium-sized trees; probably pre-date the park. Various Colorado authors disagree about nativity of this tree to Colorado. Earliest collection in 1891 at State Agricultural College, Ft. Collins. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CofG(125) , d: CS(124) , d: CDA(120) , KHD ^‡ )

Coll. No. 3015, Fraxinus pennsylvanica.

Field Notes: Coll. No. 3016, 29 Jun 2023.

Name List: Bromus japonicus

3016. Bromus japonicus Thunb. New city park (construction in 2021 and 2022), northeast of shelter, in "native" beds, 1.33 km. southeast of the GNIS location of Golden. (39.7487,-105.2083,WGS 1984) 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: EIU(126) , CofG )

Field Notes: Coll. No. 3017, 29 Jun 2023.

Name List: Lonicera tatarica

3017. Lonicera tatarica L. Fruit is twin berries growing on last years' twigs New city park (construction in 2021 and 2022), southeastern "natural" area of park, 1.39 km. southeast of the GNIS location of Golden. (39.7483,-105.2080,WGS 1984) With Prunus virginiana. Widely distributed in Colorado; likely naturalized and no longer just a garden escapee. EDDMaps: 11653694. 6/29/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (d: CofG(125) , d: EIU(126) , d: REGIS(128) , d: UCR(119) )

Coll. No. 3017, Lonicera tatarica.

Field Notes: Coll. No. 3018, 3 Jul 2023.

Name List: Juncus arcticus var. balticus

3018. Juncus arcticus (Willd.) Trautv. var. balticus (Willdenow) Trautvetter. Abandoned stream terrace, southwest side of County Road 70, 1.13 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8010,-105.3646,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD87644^‡ , UCR308410^‡ )

Coll. No. 3018, Juncus arcticus var. balticus.

Field Notes: Coll. No. 3019, 3 Jul 2023.

Name List: Poa pratensis

3019. Poa pratensis L. Perennial, rhizomatous, cobwebby, lemma and palea glabrous on lateral veins and intercostal regions. Sunny spot on a slope just above an abandoned stream terrace, southwest side of County Road 70, 1.13 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3645,WGS 1987) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: UCR(119) , KHD ^‡ )

Coll. No. 3019, Poa pratensis.

Field Notes: Coll. No. 3020, 3 Jul 2023.

Name List: Salix bebbiana

3020. Salix bebbiana Sarg. Tall, multi-trunk shrub, not pruinose, pistillate catkins, floral bracts tan, capsules pubescent. Bank of the creek in Guy Gulch, southwest side of County Road 70, 1.13 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3647,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: REGIS(128) , d: CS(124) , COLO )

Field Notes: Coll. No. 3021, 3 Jul 2023.

Name List: Vaccinium

3021. Vaccinium L. Abandoned stream channel of the creek in Guy Gulch, southwest side of County Road 70, 1.13 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3646,WGS 1984) In a thicket under Betula occidentalis, Ribes cereum, and Rubus deliciosus. Compare to Coll. No. 3112 and 3139, Vaccinium sp. from Lake County. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3021, Vaccinium sp.

Comments: 12/15/2023, Coll. No. 3021, 3 July 2023, characters observed: Perennial, low-growing; Twigs of current season, terete, reddish-brown, glabrous; Leaves, oblanceolate to oblong, 34 mm. × 14 mm. wide, smaller leaves broadest above middle, margins serrulate entire length.

Harrington (1964 2nd ed.): Vaccinium caespitosum. Weber & Wittmann (2012): V. myrtillus. Ackerfield (2022): V. membranaceum.

Field Notes: Coll. No. 3022, 3 Jul 2023.

Name List: Ranunculus glaberrimus var. ellipticus

3022. Ranunculus glaberrimus Hook. var. ellipticus (Greene) Greene. Edge of forest near the creek in Guy Gulch, southwest side of County Road 70, 1.14 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8007,-105.3649,WGS 1984) Also collected here: Pseudocymopterus montanus. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (COLO )

Field Notes: Coll. No. 3023, 3 Jul 2023.

Name List: Cymopterus lemmonii

3023. Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Edge of forest near the creek in Guy Gulch, southwest side of County Road 70, 1.14 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8007,-105.3649,WGS 1984) Grasses surrounded by Douglas fir forest, Mertensia lanceolata, Aquilegia coerulea, Fragaria vesca, and Viola canadensis. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (JCOSs.n. , KHD ^‡ , UCR308407^‡ )

Coll. No. 3023, Cymopterus lemmonii.

Comments:

Field Notes: Coll. No. 3024, 3 Jul 2023.

Name List: Clematis grosseserrata

3024. Clematis grosseserrata (Rydb.) Ackerfield. In fruit. Edge of Douglas fir forest near the creek in Guy Gulch, southwest side of County Road 70, 1.15 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3649,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3024, Clematis grosseserrata.

Field Notes: Coll. No. 3025, 3 Jul 2023.

Name List: Symphoricarpos rotundifolius

3025. Symphoricarpos rotundifolius A. Gray. Corolla tube 11 mm. + lobes 1 mm. spreading, white to pale yellow, glabrous within, anthers on evident filaments. Terrace above creek in Guy Gulch, southwest side of County Road 70, 1.17 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8010,-105.3651,WGS 1984) Open grassland with a few Douglas fir and aspens. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , FLD , d: OBI(118) )

Field Notes: Coll. No. 3026, 3 Jul 2023.

Name List: Castilleja integra

3026. Castilleja integra A. Gray. Terrace above creek in Guy Gulch, southwest side of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8012,-105.3652,WGS 1984) Grassy opening between Douglas fir forest and aspens and willows along the creek, with Achillea millefolium, Artemisia frigida, and Koeleria macrantha. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (OBI^‡ )

Field Notes: Coll. No. 3027, 3 Jul 2023.

Name List: Rosa acicularis ssp. sayi

3027. Rosa acicularis Lindl. ssp. sayi (Schwein.) W. H. Lewis. Prickles on new growth, leaflets #7. Terrace above creek in Guy Gulch, southwest side of County Road 70, 1.18 km. northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8010,-105.3652,WGS 1984) Around the base of a Douglas fir and Rocky Mountain maple. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: JCOS(115) , KHD ^‡ )

Coll. No. 3027, Rosa acicularis ssp. sayi.

Field Notes: Coll. No. 3028, 3 Jul 2023.

Name List: Lithospermum multiflorum

3028. Lithospermum multiflorum Torrey ex A. Gray. Terrace above creek in Guy Gulch, southwest side of County Road 70, 1.20 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8011,-105.3654,WGS 1984) Open edge of Douglas fir forest. Limited material, flowers just beginning to open. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (CS202105^‡ , JCOSs.n. )

Field Notes: Coll. No. 3028.1, 3 Jul 2023.

Name List: Anemone multifida

3028.1 Anemone multifida Poir. Flowers reddish-purple. Small delta at mouth of gulch tributary to Guy Gulch, southwest side of County Road 70, 1.20 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8011,-105.3654,WGS 1984) Open edge of Douglas fir forest. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (KHD )

Coll. No. 3028.1, Anemone multifida.

Field Notes: Coll. No. 3029, 3 Jul 2023.

Name List: Arnica cordifolia

3029. Arnica cordifolia Hook. Just inside the mouth of a small gulch tributary to Guy Gulch, southwest side of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3655,WGS 1984) More seen further up the gulch. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) )

Coll. No. 3029, Arnica cordifolia.

Field Notes: Coll. No. 3030, 3 Jul 2023.

Name List: Aquilegia coerulea

3030. Aquilegia coerulea E. James. Just inside the mouth of a small gulch tributary to Guy Gulch, southwest side of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8009,-105.3655,WGS 1984) More seen farther up the gulch. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: CDA(120) , d: REGIS(128) , d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 3031, 3 Jul 2023.

Name List: Draba streptocarpa

3031. Draba streptocarpa A. Gray. Fruit flat and twisted. Deep shade of a small gulch tributary to Guy Gulch, 105 m. southwest of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8008,-105.3656,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) , KHD ^‡ )

Coll. No. 3031, Draba streptocarpa.

Comments: 12/17/2023, Coll. No. 3031, 3 Jul 2023, characters observed: Perennial (short-lived?), to 40 cm., hairs various combinations of simple and forked, but not dolabriform or stellate; Leaves, basal, withered, cauline, simple, sessile, lanceolate, 30 mm. ×7 mm. wide, diminishing gradually, margin entire; Inflorescence, raceme, ebracteate; Sepals, #4, 1 row, 2.4 mm. × 1 mm. wide, oblong, color, green, margin scarious, abaxially hairy; Petals, 3.5 mm. × 1.4 mm. wide, obovate, entire, yellow; Anthers, 0.4 mm., ovate; Style, 0.7 mm.; Stigma, capitate; Fruit, pedicels, 12 mm., ascending, body, 10.5 mm. × 2.2 mm. wide (4.77:1), pubescent (maybe slightly more pubescent along margin but not “glabrous with simple hairs along the margin”).

Field Notes: Coll. No. 3032, 3 Jul 2023.

Name List: Thalictrum fendleri

3032. Thalictrum fendleri Engelm. ex A. Gray. Staminate plants in bloom. Deep shade of a small gulch tributary to Guy Gulch, 125 m. southwest of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8007,-105.3657,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: EIU(126) , d: JCOS(115) )

Field Notes: Coll. No. 3032.1, 3 Jul 2023.

Name List: Undetermined

3032.1 Undetermined. Deep shade of a small gulch tributary to Guy Gulch, 125 m. southwest of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8007,-105.3657,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: Unknown )

Field Notes: Coll. No. 3034, 3 Jul 2023.

Name List: Polemonium foliosissimum

3034. Polemonium foliosissimum A. Gray. Deep shade of a small gulch tributary to Guy Gulch, 150 m. southwest of County Road 70, 1.21 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8005,-105.3660,WGS 1984) Limited material for collection. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Coll. No. 3034, Polemonium foliosissimum.

Field Notes: Coll. No. 3034.1, 3 Jul 2023.

Name List: Hackelia floribunda

3034.1 Hackelia floribunda (Lehm.) I. M. Johnst. Deep shade of a small gulch tributary to Guy Gulch, 145 m. southwest of County Road 70, 1.20 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8005,-105.3659,WGS 1984) Also collected here: Polemonium foliosissimum. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: JCOS(115) )

Field Notes: Coll. No. 3035, 3 Jul 2023.

Name List: Physocarpus monogynus

3035. Physocarpus monogynus (Torr.) J.M. Coult. On a steep slope between two smaller gulches, deep shade of a small gulch tributary to Guy Gulch, 165 m. southwest of County Road 70, 1.21 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8004,-105.3662,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CS(124) , d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 3035.1, 3 Jul 2023.

Name List: Clematis grosseserrata

3035.1 Clematis grosseserrata (Rydb.) Ackerfield. In Fruit; was in flower on 14 Jun 2023. On a steep slope between two smaller gulches, deep shade of a small gulch tributary to Guy Gulch, 165 m. southwest of County Road 70, 1.21 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8004,-105.3662,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: JCOS(115) )

Field Notes: Coll. No. 3036, 3 Jul 2023.

Name List: Undetermined

3036. Undetermined. On a steep slope between two smaller gulches, deep shade of a small gulch tributary to Guy Gulch, 170 m. southwest of County Road 70, 1.21 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8004,-105.3662,WGS 1984) steep slope, almost a wall 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: Unknown )

Coll. No. 3036, unknown grass.

Field Notes: Coll. No. 3037, 3 Jul 2023.

Name List: Castilleja miniata

3037. Castilleja miniata Hook. Stems pilose, not tomentose, lanceolate leaves and bracts with no lobes. Small ridge between two smaller gulches, deep shade of a gulch tributary to Guy Gulch, 260 m. southwest of County Road 70, 1.60 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.8003,-105.3665,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: JCOS(115) , KHD ^‡ )

Coll. No. 3037, Castilleja miniata.

Field Notes: Coll. No. 3038, 3 Jul 2023.

Name List: Erysimum capitatum

3038. Erysimum capitatum (Hook.) Greene. Small ridge between two smaller gulches, deep shade of a gulch tributary to Guy Gulch, 265 m. southwest of County Road 70, 1.23 km. (geodesic) northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.7997,-105.3668,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) )

Field Notes: Coll. No. 3039, 3 Jul 2023.

Name List: Jamesia americana var. americana

3039. Jamesia americana Torr. & A. Gray var. americana. Small ridge between two smaller gulches, shade of a gulch tributary to Guy Gulch, 280 m. southwest of County Road 70, 1.23 km. (geodesic) northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.7996,-105.3670,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , CAS718157^‡ , JCOSs.n. , UCR308403^‡ )

Field Notes: Coll. No. 3040, 3 Jul 2023.

Name List: Packera werneriifolia

3040. Packera werneriifolia (A. Gray) W. A. Weber & �. L�ve. Open shade on a forested hillside above Guy Gulch, 290 m. southwest of County Road 70, 1.15 km. (geodesic) northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.7990,-105.3663,WGS 1984) Gentle north-facing slope in Douglas fir forest with little to no middlestory. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (JCOS , KHD 87732^‡ )

Coll. No. 3040, Packera werneriifolia.

Field Notes: Coll. No. 3041, 3 Jul 2023.

Name List: Calamagrostis purpurascens

3041. Calamagrostis purpurascens R. Br. Beside well-established game trail in open shade on a forested hillside above Guy Gulch, 290 m. southwest of County Road 70, 1.15 km. (geodesic) northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. (39.7991,-105.3656,WGS 1984) Gentle north-facing slope in Douglas fir forest with little to no middlestory. 7/3/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3041, Calamagrostis purpurascens.

Comments: 12/21/2023, Coll. No. 3041, 3 July 2023, characters observed: Perennial grass, to 40 cm., no rhizomes seen; Leaves, sheath, 12 cm., open, ligule, membranous, 4 mm., auricles, 0, blade, 15 cm. × 3 mm. wide, flat, scabrous, also adaxially densely and minutely hairy between the ribs; Inflorescence, <leaves, 1 per culm, panicle, 110 mm. × 12 mm. wide; Rachis, not extended; Spikelets, many, 8 mm. × 1 mm. wide, similar; Glumes, lower, 6 mm., veins, 1, upper, 5 mm., > lowest floret, veins, 1 (3?), keeled, awns, 0; Florets, 1^* per spikelet; ^*Rachilla, extended beyond upper floret as though there could be another floret up there, hairy; Callus, short straight white hairs; Lemma, 4 mm., < glumes, green, veins, 5, glabrous, tip, toothed, awns, 1, 7 mm., bent, attached, near base of lemma; Palea, 4 mm., < lemma, membranous; Achene, 1.7 mm., green.

Field Notes: Coll. No. 3042, 3 Jul 2023.

Name List: Boechera spatifolia

3042. Boechera spatifolia (Rydb.) Windham & Al-Shebaz. Open forest slope above Guy Gulch, 130 m. southwest of County Road 70, 1.09 km. (geodesic) northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8000,-105.3649,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Coll. No. 3042, Boechera spatifolia.

Comments: 12/22/2023, Coll. No. 3042, 3 July 2023, characters observed: Perennial herb, 45 cm. to 50 cm., hairs, simple, occasional forked hairs at base of stem; Leaves, basal, simple, petiole, 15 mm., blade 18 mm. × 5.5 mm. wide, margin, toothed, ciliate, tip, acute, cauline, 18 mm. × 1.3 mm. wide, auriculate, 1⁺mm., linear, entire; Inflorescence, elongating; Sepals, 1 row; Petals, 3 mm. × 0.7 mm. wide, color, white; Fruit, pedicels, 10 mm., spreading, body, 45 mm., × 1.3 mm. wide, descending or pendant; Ovules, biseriate.

Field Notes: Coll. No. 3043, 3 Jul 2023.

Name List: Castilleja linariifolia

3043. Castilleja linariifolia Benth. Very narrow leaves. Top of very steep slope above creek, 90 m. southwest of County Road 70, 1.09 km. (geodesic) northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8001,-105.3644,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3043, Castilleja linariifolia.

Field Notes: Coll. No. 3043.1, 3 Jul 2023.

Name List: Anaphalis margaritacea

3043.1 Anaphalis margaritacea (L.) Bentham & Hooker. Top of very steep slope above creek, 90 m. southwest of County Road 70, 1.09 km. (geodesic) northwest of Centennial Ranch house, 13.3 km. (geodesic) northwest of the GNIS location of Golden. (39.8001,-105.3644,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: Deferred )

Field Notes: Coll. No. 3044, 3 Jul 2023.

Name List: Oenothera coronopifolia

3044. Oenothera coronopifolia Torr. & A. Gray. Roadside, Golden Gate Canyon Road (County Road 70), 1.10 km. (geodesic) northwest of Centennial Ranch house, 13.25 km. (geodesic) northwest of the GNIS location of Golden. (39.8011,-105.3640,WGS 1984) 7/3/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) , KHD ^‡ )

Field Notes: Coll. No. 3045, 4 Jul 2023.

Name List: Amaranthus albus

3045. Amaranthus albus L. One large plant that was broken apart to be dried. Yard at 900 5th Street, cross street Arapahoe St., 0.83 km. northwest of the GNIS location of Golden. (39.7603,-105.2286,WGS 1984) Common adventive garden weed. 7/4/2023 Golden, Jefferson County, Colorado. (d: CofG(125) , KHD ^‡ )

Coll. No. 3045, Amaranthus albus.

Field Notes: Coll. No. 3046, 7 Jul 2023.

Name List: Parietaria pensylvanica

3046. Parietaria pensylvanica Willd. Along the re-routed Lubahn Trail, below the basalt rim of South Table Mountain, 1.15 km. east southeast of the GNIS location of Golden. (39.7538,-105.2079,WGS 1984) Wet slope above Lubahn Trail under Rhus trilobata, Symphoricarpos sp., and Cercocarpus montanus. Spring 2023 was recognized as “wetter than average.” 7/7/2023 South Table Mountain, Jefferson County, Colorado. (d: UCR(119) , d: REGIS(128) , d: CS(124) , d: OBI(118) , KHD ^‡ )

Coll. No. 3046, Parietaria pensylvanica.

Field Notes: Coll. No. 3047, 7 Jul 2023.

Name List: Dysphania botrys

3047. Dysphania botrys (L.) Mosyakin & Clemants. Beside the Olivine Trail, near its intersection with the Old Quarry Trail, 1.28 km. east southeast of the GNIS location of Golden. (39.7532,-105.2065,WGS 1984) Open, sandy ground, disturbed area beside trail. 7/7/2023 South Table Mountain, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , d: CDA(120) , d: JCOS(115) , KHD ^‡ )

Coll. No. 3047, Dysphania botrys.

Field Notes: Coll. No. 3048, 7 Jul 2023.

Name List: Sporobolus cryptandrus

3048. Sporobolus cryptandrus (Torr.) A. Gray. West side of the mesa, beside the Olivine Trail, near its intersection with the Old Quarry Trail, 1.30 km. east southeast of the GNIS location of Golden. (39.7530,-105.2062,WGS 1984) Disturbed trail-side, dry and sunny, Cercocarpus montanus the dominant shrub. 7/7/2023 South Table Mountain, Jefferson County, Colorado. (d: OBI(118) , d: JCOS(115) )

Coll. No. 3048, Sporobolus cryptandrus.

Field Notes: Coll. No. 3049, 10 Jul 2023.

Name List: Dracocephalum parviflorum

3049. Dracocephalum parviflorum Nutt. annual Small swale tributary to Morrison Creek, near crossing of Little Scraggy Trail, 1.08 km. southwest of Little Scraggy Peak, 50.3 km. south of Golden. (39.3053,-105.2841,WGS 1984) Lodgepole pine, Douglas fir, and aspen with Aquilegia coerulea and Acer glabrum. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , KHD ^‡ )

Coll. No. 3049, Dracocephalum parviflorum.

Field Notes: Coll. No. 3050, 10 Jul 2023.

Name List: Pedicularis canadensis

3050. Pedicularis canadensis L. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.14 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden. (39.3075,-105.2847,WGS 1984) Being worked over by a large bumble bee. Also collected here: Oryzopsis asperifolia. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , d: CDA(120) , COLO )

Field Notes: Coll. No. 3051, 10 Jul 2023.

Name List: Oryzopsis asperifolia

3051. Oryzopsis asperifolia Michx. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.14 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden. (39.3075,-105.2847,WGS 1984) Damp forest floor; also collected here; Osmorhiza depauperata, Pyrola chlorantha, and Pedicularis canadensis; shattering as fast as I can collect it. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: CS(124) , OBI )

Field Notes: Coll. No. 3052, 10 Jul 2023.

Name List: Bryophyte

3052. Bryophyte . upper Morrison Creek, in the creek bed (39.3074,-105.2845,WGS 1984) 7/10/2023 Morrison Creek, Jefferson County, Colorado. (Undist )

Field Notes: Coll. No. 3053, 10 Jul 2023.

Name List: Rubus pubescens

3053. Rubus pubescens Raf. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.15 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3074,-105.2846,WGS 1984) Forested, shaded, wet bank of creek; also collected nearby: Osmorhiza depauperata, Pyrola chlorantha, Pedicularis canadensis, and Oryzopsis asperifolia. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: COLO(122) , d: CAS(121) , d: OBI(118) , KHD ^‡ )

Coll. No. 3053, Rubus pubescens.

Comments: 12/26/2023, Coll. No. 3053, 10 July 2023, characters observed: Creeping perennial, to 25 cm., without stolons; Stem, unarmed, villous, glabrate proximally; Stipules, 8 mm., leaf-like, lobed; Leaves, alternate, compound, ternate, leaflets, ovate, 68 mm. × 33 mm. wide, serrate above middle, margins villous, tips, acuminate on smaller leaflets, otherwise acute, adaxial, glabrous, abaxial, soft straight hairs on veins; Inflorescence, 2-4 flowers; Petiole, 12 mm., stipitate glandular; Flowers, actinomorphic, hypanthium present; Sepals, 4 mm. × 1.5 mm. wide, joined at base, without bracteoles; Petals, 5 mm. × 2 mm. wide, spoon-shaped, free to hypanthium, white, fading pink; Stamens, many.

Field Notes: Coll. No. 3054, 10 Jul 2023.

Name List: Pyrola chlorantha

3054. Pyrola chlorantha Sw. Many plants here, 2 in bloom, 1 in bud. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.16 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3072,-105.2847,WGS 1984) Forested, shaded, wet bank of creek; also collected nearby: Osmorhiza depauperata, Rubus pubescens, Pedicularis canadensis, and Oryzopsis asperifolia. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (OBI )

Coll. No. 3054, Pyrola chlorantha

Coll. No. 3054, Pyrola chlorantha.

Field Notes: Coll. No. 3055, 10 Jul 2023.

Name List: Osmorhiza depauperata

3055. Osmorhiza depauperata Phil. In fruit, no flowers seen. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.16 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3073,-105.2847,WGS 1984) Forested, shaded, wet bank of creek; also collected nearby: Pyrola chlorantha, Rubus pubescens, Pedicularis canadensis, and Oryzopsis asperifolia. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: CAS(121) , UCR )

Coll. No. 3055, Osmorhiza depauperata.

Field Notes: Coll. No. 3056, 10 Jul 2023.

Name List: Fragaria vesca

3056. Fragaria vesca L. Small terrace above Morrison Creek, near crossing of Little Scraggy Trail, 1.20 km. southwest of Little Scraggy Peak, 50.1 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3068,-105.2847,WGS 1984) Forested, shaded, wet bank of creek; also collected nearby: Osmorhiza depauperata, Pyrola chlorantha, Rubus pubescens, Pedicularis canadensis, and Oryzopsis asperifolia. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , CAS )

Coll. No. 3056, Fragaria vesca.

Field Notes: Coll. No. 3057, 10 Jul 2023.

Name List: Rosa acicularis ssp. sayi

3057. Rosa acicularis Lindl. ssp. sayi (Schwein.) W. H. Lewis. Prickles on new growth, seven leaflets per leaf, bracts very long, petals short, color intense. Steep slope above Morrison Creek, near crossing of Little Scraggy Trail, 1.18 km. southwest of Little Scraggy Peak, 50.1 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3068,-105.2845,WGS 1984) Deep shade of forest; also collected nearby: Osmorhiza depauperata, Pyrola chlorantha, Fragaria vesca, Rubus pubescens, Pedicularis canadensis, and Oryzopsis asperifolia. Limited material for collection. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (EIU )

Coll. No. 3057, Rosa woodsii

Field Notes: Coll. No. 3058, 10 Jul 2023.

Name List: Physocarpus monogynus

3058. Physocarpus monogynus (Torr.) J.M. Coult. Bouldery slope above Morrison Creek, near crossing of Little Scraggy Trail, 1.13 km. southwest of Little Scraggy Peak, 50.0 km. south of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3076,-105.2847,WGS 1984) Lodgepole pine, Douglas fir, aspen, with Juniperus comunis var. depressa and Acer glabrum. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: CAS(121) , KHD ^‡ )

Field Notes: Coll. No. 3059, 10 Jul 2023.

Name List: Geum macrophyllum var. perincisum

3059. Geum macrophyllum Willd. var. perincisum (Rydb.) Raup. Shaded streamside along Morrison Creek near where joined by horse trail (probably an old road), 848 m. southwest of Little Scraggy Peak, 49.8 km. south of the GNIS location of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3100,-105.2830,WGS 1984) Also collected here: Erigeron eximus, Hackelia floribunda, Geranium richardsonii, and Aconitum columbianum. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , d: CAS(121) , UCR )

Field Notes: Coll. No. 3060, 10 Jul 2023.

Name List: Arabis pycnocarpa var. pycnocarpa

3060. Arabis pycnocarpa M. Hopkins var. pycnocarpa. Open forest near the divide between Morrison Creek and Sixmile Creek, 966 m. southwest of Little Scraggy Peak, 49.8 km. south of the GNIS location of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3076,-105.2818,WGS 1984) Also collected here: Pseudocymopterus montanus. On the horse trail (old road?) just north of the Little Scraggy Trail. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: COLO(122) , KHD87539^‡ , UCR232543^‡ )

Comments: 12/27/2023, Coll. No. 3060, 10 Jul 2023, characters observed: Perennial herb, terrestrial, 25 cm. to 40 cm. tall, hairs, mostly simple, rarely forked; Stem, erect, leafy, proximal, hairy, distal, glabrous; Leaves, basal, withering, petiole, 4 mm., blade, 14 mm. × 7 mm. wide, oblanceolate, margin, several small teeth, tip, rounded, cauline, sessile, 13 mm. × 3 mm. wide, oblong, margin, few small teeth; Inflorescence, raceme, 40 mm. × 10 mm. wide, not bracted, not one-sided; Flowers, radial; Sepals, #4, rows, #1, 2.5 mm. × 0.8 mm. wide, ovate, color, green, glabrous; Petals, 4 mm. × 1.2 mm. wide, obovate, margin, entire, color, white, lavender tint when dry; Stamens, #6, 3 & 3.5 mm.; Filaments, plain; Anthers, 0.5&nbp;mm., ovate; Stigma, capitate; Fruit, pedicels, 7 mm., ascending, body, 10.5 mm., ascending; Ovules, biseriate.

Field Notes: Coll. No. 3061, 10 Jul 2023.

Name List: Cymopterus lemmonii

3061. Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Open forest near the divide between Morrison Creek and Sixmile Creek, 966 m. southwest of Little Scraggy Peak, 49.8 km. south of the GNIS location of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3075,-105.2818,WGS 1984) Also collected here: Arabis pycnocarpa. On the horse trail (old road?) just north of the Little Scraggy Trail. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , CDA , REGIS )

Field Notes: Coll. No. 3062, 10 Jul 2023.

Name List: Oenothera coronopifolia

3062. Oenothera coronopifolia Torr. & A. Gray. Along the Little Scraggy Trail, in Gunbarrel Creek drainage, 950 m. south of Little Scraggy Peak, 50.1 km. south of the GNIS location of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3062,-105.2767,WGS 1984) Alluvial soil below rock outcrops, with Ceanothus fendleri and Acer glabrum. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , d: OBI(118) , KHD ^‡ )

Field Notes: Coll. No. 3063, 10 Jul 2023.

Name List: Holodiscus discolor var. microphyllus

3063. Holodiscus discolor (Pursh) Maxim. var. microphyllus (Rydb.) Jeps. Along the Little Scraggy Trail, in Gunbarrel Creek drainage, 950 m. south of Little Scraggy Peak, 50.1 km. south of the GNIS location of Golden; accessed by way of Kelsey Campground and Jefferson County Road 126. (39.3063,-105.2768,WGS 1984) Hillside with rock outcrops and boulders; also here: Jamesia americana and Acer glabrum. 7/10/2023 Morrison Creek, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: REGIS(128) , KHD ^‡ )

Field Notes: Coll. No. 3064, 12 Jul 2023.

Name List: Astragalus flexuosus

3064. Astragalus flexuosus G. Don. Spreading horizontally to 1 m. Open flat, possible former parking area across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7946,-105.3545,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: CDA(120) , d: OBI(118) , d: EIU(126) , JCOS )

Field Notes: Coll. No. 3065, 12 Jul 2023.

Name List: Silene latifolia

3065. Silene latifolia Poir. Basal leaves 0, flowers white, imperfect. Around the base of a concrete structure, across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7946,-105.3547,WGS 1984) Most have been eaten. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: OBI(117) , JCOS )

Field Notes: Coll. No. 3066, 12 Jul 2023.

Name List: Dracocephalum parviflorum

3066. Dracocephalum parviflorum Nutt. Around the base of a concrete structure, across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7946,-105.3547,WGS 1984) Side of concrete structure, also collected here: Ambrosia tomentosa, Silene latifolia, and Astragalus flexuosus. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , JCOS , KHD ^‡ )

Coll. No. 3066, Dracocephalum parviflorum.

Field Notes: Coll. No. 3067, 12 Jul 2023.

Name List: Ambrosia tomentosa

3067. Ambrosia tomentosa Nutt. Just southeast of a concrete structure, across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7945,-105.3546,WGS 1984) Also collected nearby: Astragalus flexuosus, Silene latifolia, and Dracocephalum parviflorum. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , JCOS , KHD ^‡ )

Coll. No. 3067, Ambrosia tomentosa.

Field Notes: Coll. No. 3068, 12 Jul 2023.

Name List: Scrophularia lanceolata

3068. Scrophularia lanceolata Pursh. One in bloom, four-five more in bud, with Hackelia floribunda. Around the base of a willow in a former meander of the creek, 115 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7947,-105.3554,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Field Notes: Coll. No. 3069, 12 Jul 2023.

Name List: Geum macrophyllum var. perincisum

3069. Geum macrophyllum Willd. var. perincisum (Rydb.) Raup. Around the base of a willow in a former meander of the creek, 130 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7947,-105.3554,WGS 1984) Limited material, some eaten; with Hackellia floribunda 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS )

Field Notes: Coll. No. 3070, 12 Jul 2023.

Name List: Hackelia floribunda

3070. Hackelia floribunda (Lehm.) I. M. Johnst. Large perennial herb, more than 1 m. tall. Around the base of a willow in a former meander of the creek, 130 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7947,-105.3553,WGS 1984) Around willow with Ribes inerme, Geum macrophyllum, and Scrophularia lanceolata. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: CDA(120) , d: CS(124) , d: CAS(121) , JCOS )

Field Notes: Coll. No. 3071, 12 Jul 2023.

Name List: Ribes inerme

3071. Ribes inerme Rydb. Around the base of a willow in a former meander of the creek, 135 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7947,-105.3554,WGS 1984) At the base of a willow in an abandoned meander of the creek, with Hackellia floribunda, Geum macrophyllum, and Scrophularia lanceolata. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: COLO(122) , d: CS(124) , JCOS )

Coll. No. 3071, Ribes inerme.

Field Notes: Coll. No. 3072, 12 Jul 2023.

Name List: Oenothera biennis

3072. Oenothera biennis L. Collection is halved infloresence plus basal leaves; not much material to work with. Around the base of a willow in a former meander of the creek, 125 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7948,-105.3553,WGS 1984) Placed in O. biennis on the strength of long hairs and short glandular hairs on the ovary, but see Ackerfield (2022) note regarding presence of O. biennis in Colorado. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (JCOS , KHD ^‡ )

Coll. No. 3072, Oenothera biennis.

Field Notes: Coll. No. 3073, 12 Jul 2023.

Name List: Montia chamissoi

3073. Montia chamissoi (Spreng.) Greene. In still water beside the creek, 115 m. west across County Road 70 from the Centennial Ranch house, 2.43 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7948,-105.3552,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , JCOS , KHD ^‡ )

Coll. No. 3073, Montia chamissoi.

Field Notes: Coll. No. 3074, 12 Jul 2023.

Name List: Phalaris arundinacea

3074. Phalaris arundinacea L. In still water beside the creek, 94 m. west across County Road 70 from the Centennial Ranch house, 2.42 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7948,-105.3551,WGS 1984) Also nearby in still water: Montia chamissoi. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , JCOS , KHD ^‡ )

Coll. No. 3074, Phalaris arundinacea.

Comments: 8/28/2023, Coll. No. 3074, 12 Jul 2023, characters observed: Perennial grass, to 150 cm., still water beside creek, rhizomatous; Leaves, sheath, open, 140 mm., ligule, membraneous, 5 mm., blade, 160 mm. ×8 mm. wide, flat; Inflorescence, panicle; Spikelets, 5-6 mm.; Florets, 1, though subtended on opposite sides by 2 small hairy bits of tissue that could be sterile florets; Glumes, lower, 5 mm., upper, 6 mm., wingless, keeled, barely scabrous; Lemma, 4 mm., awns absent; Palea, 3 mm.

Field Notes: Coll. No. 3075, 12 Jul 2023.

Name List: Rosa acicularis ssp. sayi

3075. Rosa acicularis Lindl. ssp. sayi (Schwein.) W. H. Lewis. Prickles on new growth, leaflets 7, flowers intense rose. Terrace below hill slope, 150 m. west northwest across County Road 70 from the Centennial Ranch house, 2.39 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7951,-105.3557,WGS 1984) Old tree blow-down with Acer glabrum and Symphoricarpos occidentalis and a colony of rhubarb nearby. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , d: UCR(119) , JCOS )

Field Notes: Coll. No. 3077, 12 Jul 2023.

Name List: Thalictrum fendleri

3077. Thalictrum fendleri Engelm. ex A. Gray. Pistillate plants. Shaded streamside, 185 m. west northwest across County Road 70 from the Centennial Ranch house, 2.35 km. south of Mount Tom, 12.4 km. west northwest of the GNIS location of Golden. (39.7955,-105.3559,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , JCOS )

Field Notes: Coll. No. 3078, 12 Jul 2023.

Name List: Eriogonum umbellatum var. umbellatum

3078. Eriogonum umbellatum Torr. var. umbellatum. Sunny mouth of a small gulch tributary to Guy Gulch, 130 m. southwest across County Road 70 from the Centennial Ranch house, 2.52 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7939,-105.3550,WGS 1984) There are several inflorescences in this collection that have a single branch and several that have an extra whorl of bracts as in variety ramulosum, a variety local to the Front Range. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , CAS718152^‡ , JCOS )

Field Notes: Coll. No. 3079, 12 Jul 2023.

Name List: Piptatherum micranthum

3079. Piptatherum micranthum (Trin. & Rupr.) Barkworth. Dry former roadside in the shaded mouth of a small gulch tributary to Guy Gulch, 190 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7936,-105.3556,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3079, Piptatherum micranthum.

Comments: 12/31/2023, Coll. No. 3079, 12 July 2023, characters observed: Perennial grass, to 50 cm., caespitose; Leaves, sheath, 75 mm., open, ligule, membranous, 1.5 mm., blade, 250 mm. × 3.2 mm. wide, some flat, some involute; Inflorescence, 1 per culm, <leaves, panicle, contracted [more so than would be expected], 120 mm. × 5 mm. wide; Rachis, not extended; Compression, not remarkable; Glumes, lower, 3.2 mm., veins, 5(7?), upper, 3.5 mm. >lowest floret, veins, 5(7?), membranous to transparent distally, awns, 0; Florets, 1 per spikelet; Lemma, 2.2 mm., <glumes, coriaceous, rolled, sparsely pubescent, veins, 3, awns, #1, 9 mm., wavy, deciduous; Palea, 2 mm., <lemma, coriaceous.

Field Notes: Coll. No. 3080, 12 Jul 2023.

Name List: Agropyron cristatum

3080. Agropyron cristatum (L.) Gaertn. Dry former roadside in the shaded mouth of a small gulch tributary to Guy Gulch, 192 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7935,-105.3556,WGS 1984) 7/12/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3080, ~~Elymus lanceolatus~~ Agropyron cristatum.

Spikelet of Coll. No. 3080, ~~Elymus lanceolatus~~ Agropyron cristatum.

Comments: 12/31/2023, Coll. No. 3080, 12 July 2023, characters observed: Perennial grass, to 75 cm., not obviously rhizomatous; Leaves, sheath, 93 mm., open, ligule, membranous, auricles, minimal, 0.5 mm., lanceolate, blade, 160 mm. × 3.2 mm. wide, flat, adaxial pilose; Inflorescence, 2-sided spike, 45 mm. × 7 mm. wide; Spikelets, many, 12 mm. × 12 mm. wide, overlapping about ⅔ or 8 mm., similar, borne singly, glumes and florets spreading; Glumes, lower, 5 mm. + awn, 3 mm. veins, 5, upper, 5 mm. × 1.5 mm. wide + awn 3.5 mm., <lowest floret, veins, 5, keeled; Florets, 5 per spikelet; Lemma, 7.5 mm., >glumes, keeled, barely scabrous on veins, veins, 5, tip, bifid, awns, #1, 2.8 mm., straight; Palea, 5.8 mm., <lemma, membranous, keel, ciliate, tip, bifid; Anthers, 3 mm.

Field Notes: Coll. No. 3081, 12 Jul 2023.

Name List: Circaea alpina

3081. Circaea alpina L. Small forested gulch tributary to Guy Gulch, 205 m. southwest across County Road 70 from the Centennial Ranch house, 2.52 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7936,-105.3558,WGS 1984) Large patch in deep shade on floor and south slope of gulch. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CS(124) , JCOS , KHD ^‡ )

Coll. No. 3081, Circaea alpina.

Field Notes: Coll. No. 3082, 12 Jul 2023.

Name List: Ranunculus abortivus

3082. Ranunculus abortivus L. Small forested gulch tributary to Guy Gulch, 192 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7935,-105.3559,WGS 1984) Floor of gulch, also collected here: Circaea alpina, Prosartes trachycarpa, and Piptatherum micranthum. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (JCOS , KHD ^‡ )

Coll. No. 3082, Ranunculus abortivus.

Comments: 1/1/2024, Coll. No. 3082, 12 July 2023, characters observed: Annual or perennial herb, semi-aquatic, 30 cm., not creeping or rooting at nodes; Leaves, dimorphic, basal, simple, margin, crenate, cauline, compound or very deeply lobed; Sepals, glabrous; Petals, yellow, claw 0.5 mm. + blade 1.5 mm. = 2.0 mm.; Achenes, 1.3 mm. beak very small, curved, globose, glabrous.

Field Notes: Coll. No. 3083, 12 Jul 2023.

Name List: Prosartes trachycarpa

3083. Prosartes trachycarpa S. Watson. Immature fruit. Small forested gulch tributary to Guy Gulch, 192 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7935,-105.3559,WGS 1984) On the bank of the gulch, also collected here: Circaea alpina, Ranunculus abortivus, and Piptatherum micranthum. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , JCOS , KHD ^‡ )

Coll. No. 3083, Prosartes trachycarpa.

Field Notes: Coll. No. 3084, 12 Jul 2023.

Name List: Pyrola asarifolia

3084. Pyrola asarifolia Michx. Many rosettes, 1 plant in bud, 1 plant in bloom. Small forested gulch tributary to Guy Gulch, 227 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.3 km. west northwest of the GNIS location of Golden. (39.7937,-105.3563,WGS 1984) On the floor of the gulch, also collected here: Circaea alpina, Ranunculus abortivus, Prosartes trachycarpa, and Piptatherum micranthum. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3084, Pyrola asarifolia.

Field Notes: Coll. No. 3085, 12 Jul 2023.

Name List: Galium triflorum

3085. Galium triflorum Michx. Small forested gulch tributary to Guy Gulch, 260 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.4 km. west northwest of the GNIS location of Golden. (39.7937,-105.3568,WGS 1984) Very deep forest duff on a small shaded divide between two drainages. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (KHD ^‡ , OBI^‡ )

Coll. No. 3085, Galium triflorum.

Field Notes: Coll. No. 3086, 12 Jul 2023.

Name List: Veronica americana

3086. Veronica americana (Raf.) Benth. Leaves petiolate, inflorescence of axillary racemes. Small forested gulch tributary to Guy Gulch, 282 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.4 km. west northwest of the GNIS location of Golden. (39.7938,-105.3571,WGS 1984) Growing in water at bottom of gulch. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , JCOSs.n. , KHD 82256^‡ , OBI^‡ )

Coll. No. 3086, Veronica americana.

Field Notes: Coll. No. 3087, 12 Jul 2023.

Name List: Collomia linearis

3087. Collomia linearis Nutt. Small forested gulch tributary to Guy Gulch, 345 m. southwest across County Road 70 from the Centennial Ranch house, 2.56 km. south of Mount Tom, 12.5 km. west northwest of the GNIS location of Golden. (39.7940,-105.3580,WGS 1984) Beside sunny dry trail on the north side of the gulch. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (COLO )

Field Notes: Coll. No. 3088, 12 Jul 2023.

Name List: Gayophytum ramosissimum

3088. Gayophytum ramosissimum Torr. & A. Gray. Fruit clavate, 6 mm. on 6 mm. pedicels, petals 1.0 mm. Mouth of a small forested gulch tributary to Guy Gulch, 140 m. southwest across County Road 70 from the Centennial Ranch house, 2.55 km. south of Mount Tom, 12.2 km. west northwest of the GNIS location of Golden. (39.7936,-105.3547,WGS 1984) Annuals found on dry soil, top of gopher mounds. 7/12/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS , KHD ^‡ )

Coll. No. 3087, Gayophytum ramosissimum.

Field Notes: Coll. No. 3089, 17 Jul 2023.

Name List: Symphyotrichum spathulatum

3089. Symphyotrichum spathulatum (Lindl.) G. L. Nesom. Terrace above Salt Creek, just off Forest Road 435 “Salt Creek Road,” 2.8 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9572,-106.0044,WGS 1984) Dry, lightly shaded, terrace above the creek. Also collected here: Lappula occidentalis, Astragalus hallii, and seen: Dodecatheon pulchellum, and Iris missouriensis. Variety spathulatum, if infraspecific names are to be applied. 7/17/2023 Salt Creek, Park County, Colorado. (d: UCR(119) , d: CS(124) , d: OBI(118) , KHD ^‡ )

Coll. No. 3089, Symphyotrichum spathulatum.

Comments: 1/3/2024, Coll. No. 3089, 17 July 2023, characters observed: Perennial herb, 18 cm.; Stem, ascending, glabrate, pilose below heads, hairs multicellular with clear crosswalls, glandular immediately below head; Leaves, basal, petiole, 22 mm., blade, 40 mm. × 8 mm. wide, oblong / elliptical / oblanceolate, cauline, reduced, 33 mm. × 4 mm., sessile, linear-lanceolate, sparsely pilose, margins, entire, closely appressed ciliate; Inflorescence, 1-5 heads per stem; Phyllaries, in 3± series, chartaceous proximally, green distally, midvein green, tips, acute; Flowers, of 2 kinds; Ray flowers, tube 2 mm. + blade 9 mm. × 2 mm. wide, blue, fertile; Disk flowers, many, yellow; Pappus, in two series, very short hairs and well-developed bristles, pappus of ray and disk flowers alike.

Field Notes: Coll. No. 3090, 17 Jul 2023.

Name List: Lappula occidentalis

3090. Lappula occidentalis (S. Watson) Greene. Terrace above Salt Creek, 100 m. northeast on the right bank of the creek, along Forest Road 435 “Salt Creek Road,” 2.8 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9577,-106.0039,WGS 1984) Dry soil at break in slope above creek. Also collected here: Symphyotrichum spathulatum, Astragalus hallii, and seen: Dodecatheon pulchellum, and Iris missouriensis. 7/17/2023 Salt Creek, Park County, Colorado. (d: CS(124) , d: COLO(122) , OBI^‡ , REGISs.n. )

Field Notes: Coll. No. 3091, 17 Jul 2023.

Name List: Astragalus hallii var. hallii

3091. Astragalus hallii A. Gray var. hallii. Sprawling from buried central caudex, flowers magenta fading blue, fruit dehiscing early. Terrace above Salt Creek, 135 m. northeast on the right bank of the creek, along Forest Road 435 “Salt Creek Road,” 2.8 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9578,-106.0035,WGS 1984) Also collected here: Symphyotrichum spathulatum, Lappula occidentalis, and seen: Dodecatheon pulchellum, and Iris missouriensis. 7/17/2023 Salt Creek, Park County, Colorado. (d: EIU(126) , d: CDA(120) , d: CAS(121) , CS )

Field Notes: Coll. No. 3092, 17 Jul 2023.

Name List: Potentilla hippiana var. hippiana

3092. Potentilla hippiana Lehm. var. hippiana. About 590 m. east of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9586,-106.0011,WGS 1984) Drying flat away from creek, with Oenothera coronopifolia, Artemisia frigida, Gutierrezia sarothrae, Juncus articus, and a sedge, probably Carex inops var. heliophila. 7/17/2023 Salt Creek, Park County, Colorado. (d: OBI(118) , d: EIU(126) , d: REGIS(128) , KHD ^‡ )

Field Notes: Coll. No. 3093, 17 Jul 2023.

Name List: Euphorbia brachycera

3093. Euphorbia brachycera Engelm. Uncommon. Along the fence line, about 630 m. east of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9600,-106.0012,WGS 1984) Open mud-cracked flat, with Dasiphora fruticosa, Koeleria macrantha, Antennaria sp., and Gutierrezia sarothrae. 7/17/2023 Salt Creek, Park County, Colorado. (d: CS(124) , d: COLO(122) , d: CAS(121) , UCR )

Coll. No. 3093, Euphorbia sp.

Coll. No. 3093, Euphorbia brachycera.

Mature cyathium of Coll. No. 3093, Euphorbia brachycera.

Young cyathium of Coll. No. 3093, Euphorbia brachycera.

Field Notes: Coll. No. 3094, 17 Jul 2023.

Name List: Argentina anserina

3094. Argentina anserina (L.) Rydb. Along the fence line, about 636 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9605,-106.0014,WGS 1984) Dry bank of small spring-fed creek, with Antennaria sp., and Artemisia frigida. 7/17/2023 Salt Creek, Park County, Colorado. (d: UCR(119) , d: OBI(118) , d: CS(124) , KHD ^‡ )

Coll. No. 3094, Potentilla anserina.

Coll. No. 3094, Rosaceae Argentina anserina.

Field Notes: Coll. No. 3095, 17 Jul 2023.

Name List: Hymenopappus filifolius var. cinereus

3095. Hymenopappus filifolius Hook. var. cinereus (Rydb.) I. M. Johnst. Along the fence line, about 636 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9613,-106.0021,WGS 1984) In stiff, dry soil that appears subject to sheet flow, with: Penstemon teucroides and Packera fendleri. 7/17/2023 Salt Creek, Park County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , KHD ^‡ )

Coll. No. 3095, Hymenopappus filifolius var. cinereus.

Field Notes: Coll. No. 3096, 17 Jul 2023.

Name List: Corydalis aurea

3096. Corydalis aurea Willd. (38.9602,-106.0025,WGS 1984) tiny plants on north slope of arroyo Combined with Coll. No. 3097. 7/17/2023 Salt Creek, Park County, Colorado. (Undist. )

Coll No. 3096, Corydalis aurea.

Field Notes: Coll. No. 3097, 17 Jul 2023.

Name List: Corydalis aurea

3097. Corydalis aurea Willd. Banks of an arroyo, about 520 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9601,-106.0027,WGS 1984) Larger plants on the south side of the arroyo, smaller plants on the north side. 7/17/2023 Salt Creek, Park County, Colorado. (d: OBI(118) , d: REGIS(128) , d: EIU(126) , KHD ^‡ )

Field Notes: Coll. No. 3097.1, 17 Jul 2023.

Name List: Rumex triangulivalvis

3097.1 Rumex triangulivalvis (Danser) Rech. f. Banks of an arroyo, about 520 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9601,-106.0027,WGS 1984) South slope of a developing arroyo. 7/17/2023 Salt Creek, Park County, Colorado. (d: COLO(122) , d: OBI(118) , KHD )

Field Notes: Coll. No. 3098, 17 Jul 2023.

Name List: Pascopyrum smithii

3098. Pascopyrum smithii (Rydb.) �. L�ve. Strongly rhizomatous. Base of hills, about 255 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9590,-106.0054,WGS 1984) Occasional at base of hills, stiff soil, edge of Ponderosa pine forest, also out on the plain. 7/17/2023 Salt Creek, Park County, Colorado. (d: OBI(118) , d: COLO(122) , d: UCR(119) , KHD ^‡ )

Coll. No. 3098, ~~Elymus lanceolatus var. lanceolatus~~ Pascopyrum smithii.

Spikelets of Coll. No. 3098, ~~Elymus lanceolatus var. lanceolatus~~ Pascopyrum smithii.

Comments: 1/6/2024, Coll. No. 3098, 17 July 2023, characters observed: Perennial grass, to 50 cm., strongly rhizomatous; Leaves, sheath, 60+ mm., nodes not exposed, open, ligule, membranous, short, blade, 180 mm., tightly involute; Inflorescence, 1 per culm, >leaves, 2-sided spike, 75 mm. × 10 mm. wide; Spikelets, many, 18 mm. × 4 mm. wide, similar, borne singly, sessile, overlap by ½; Compression, unremarkable; Disarticulation, below the glumes; Glumes, lower, 8 mm., folded, veins, 5, upper, 9.5 mm., <lowest floret, veins, 5(7?), awns, 1.5 mm.; Florets, 8 per spikelet; Lemma, 9.5 mm., >glumes, rolled, short ascending hairs, veins, ≥5, tip, bifid, awns, #1, 1 mm., straight; Palea, 8 mm., <lemma, veins, ciliate, tip, bifid; Anthers, #3, 3 mm.

Field Notes: Coll. No. 3099, 17 Jul 2023.

Name List: Eriogonum alatum

3099. Eriogonum alatum Torrey in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers. 168, plate 8. 1853. Base of hills, about 260 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9590,-106.0053,WGS 1984) Edge of ponderosa pine forest, with Artemisia tridentata and Thermopsis rhombifolia. 7/17/2023 Salt Creek, Park County, Colorado. (CS )

Field Notes: Coll. No. 3100, 17 Jul 2023.

Name List: Eremogone fendleri

3100. Eremogone fendleri (A. Gray) Ikonnikov. Base of hills, about 240 m. northeast of the crossing of Salt Creek by Forest Road 435 “Salt Creek Road,” 3.0 mi. by road west of US Highway 285, 111 km. southwest of Golden. (38.9588,-106.0055,WGS 1984) Open ground at edge of ponderosa pine forest. 7/17/2023 Salt Creek, Park County, Colorado. (d: CS(124) , COLO )

Field Notes: Coll. No. 3101, 18 Jul 2023.

Name List: Artemisia campestris var. purshii

3101. Artemisia campestris L. var. purshii (Besser ex Hook.) Cronquist. Edge of forest on west-facing slope above West Tennessee Creek, 588 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3472,-106.3631,WGS 1984) Near base of slope above former meander of West Tennessee Creek, with Leptosiphon nuttallii and Arenaria congesta. Coordinates estimated from GoogleEarth. Distances measured from GNIS point features. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (CAS718170^‡ , CS202153^‡ , UCR308514^‡ )

Habitat of Coll. No. 3101, Artemisia borealis, edge of flood plain of West Tennessee Creek.

Field Notes: Coll. No. 3101.1, 18 Jul 2023.

Name List: Antennaria rosea

3101.1 Antennaria rosea Greene. Edge of forest on west-facing slope above West Tennessee Creek, 588 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3472,-106.3631,WGS 1984) Near base of slope above former meander of West Tennessee Creek, with Artemisia borealis, Leptosiphon nuttallii and Arenaria congesta. Coordinates estimated from GoogleEarth. Distances measured from GNIS point features. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: CS(124) )

Field Notes: Coll. No. 3102, 18 Jul 2023.

Name List: Phleum alpinum

3102. Phleum alpinum L. Grass with a spike-like inflorescence. Former meander of West Tennessee Creek, 575 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3471,-106.3635,WGS 1984) Collected with Danthonia intermedia. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , d: COLO(122) , KHD 87387^‡ )

Coll. No. 3102.1, Danthonia intermedia and Coll. No. 3102, Phleum alpina.

General view of the flood plain of West Tennessee Creek.

Coll. No. 3102, Phleum alpinum.

Field Notes: Coll. No. 3102.1, 18 Jul 2023.

Name List: Danthonia intermedia

3102.1 Danthonia intermedia Vasey. Grass with a compressed panicle, lemma hairs restricted to margins. Former meander of West Tennessee Creek, 575 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3471,-106.3634,WGS 1984) Collected with Phleum alpina. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: REGIS(128) , d: EIU(126) , d: CAS(121) , CS202155^‡ )

Coll. No. 3102.1, Danthonia intermedia and Coll. No. 3102, Phleum alpina.

Coll. No. 3102.1, Danthonia intermedia.

Field Notes: Coll. No. 3102.2, 18 Jul 2023.

Name List: Potentilla gracilis var. fastigiata

3102.2 Potentilla gracilis Hook. var. fastigiata (Nutt.) S. Watson. Former meander of West Tennessee Creek, 575 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3471,-106.3635,WGS 1984) Collected with Danthonia intermedia, and Phleum alpunum. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: EIU(126) , KHD87646^‡ )

Field Notes: Coll. No. 3102.3, 18 Jul 2023.

Name List: Cymopterus lemmonii

3102.3 Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Former meander of West Tennessee Creek, 575 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3471,-106.3634,WGS 1984) Collected with Potentilla gracilis var. fastigiata, Danthonia intermedia, and Phleum alpunum. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (KHD87648^‡ )

Field Notes: Coll. No. 3103, 18 Jul 2023.

Name List: Salix glauca

3103. Salix glauca L. Former meander of West Tennessee Creek, 578 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3469,-106.3636,WGS 1984) Low shrub on floor of meander, also collected here: Pseudocymopterus montanus, Potentilla gracilis var. fastigiata, Danthonia intermedia, and Phleum alpinum. Variety villosa Andersson, if infraspecific names are to be applied. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , CS202156^‡ , KHD87542^‡ )

Coll. No. 3103, Salix glauca.

Field Notes: Coll. No. 3104, 18 Jul 2023.

Name List: Boechera grahamii

3104. Boechera grahamii (Lehm.) Windham & Al-Shehbaz. Lowest terrace above West Tennessee Creek, 588 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3459,-106.3653,WGS 1984) First terrace above creek, sunny and dry, with Arenaria sp. and Erigeron sp. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (KHD ^‡ )

Coll. No. 3104, Boechera grahamii.

Field Notes: Coll. No. 3105, 18 Jul 2023.

Name List: Heterotheca pumila

3105. Heterotheca pumila (Greene) Semple. Lowest terrace above West Tennessee Creek, 588 m. (geodesic) southeast of Lily Lake, 12.3 km. (geodesic) north northwest of Leadville. (39.3458,-106.3656,WGS 1984) First terrace above creek, sunny and dry, with Arenaria sp. and Erigeron sp. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: COLO(122) , d: CS(124) , CAS )

Coll. No. 3105, Heterotheca pumila

Coll. No. 3105, Heterotheca pumila.

Field Notes: Coll. No. 3106, 18 Jul 2023.

Name List: Caltha chionophila

3106. Caltha chionophila Greene. In a meadow just north of West Tennessee Creek, 580 m. southwest of Lily Lake, 12.6 km. northwest of the GNIS location of Leadville. (39.3462,-106.3715,WGS 1984) 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: CS(124) , OBI )

Field Notes: Coll. No. 3107, 18 Jul 2023.

Name List: Packera crocata

3107. Packera crocata (Rydb.) W. A. Weber & A. Love. Basal leaves mostly withered, bases chordate to cuneate. In a meadow just north of West Tennessee Creek, 580 m. southwest of Lily Lake, 12.6 km. northwest of the GNIS location of Leadville. (39.3466,-106.3723,WGS 1984) Also collected here: Caltha chionophila. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: COLO(122) , d: CS(124) , KHD ^‡ , OBI^‡ )

Meadow above West Tennessee Creek with Pedicularis groenlancica and Packera sp.

Coll. No. 3107, Packera crocata.

Field Notes: Coll. No. 3108, 18 Jul 2023.

Name List: Veratrum californicum

3108. Veratrum californicum Durand. Meadow in a small valley between West Tennessee Creek and Lily Lake, 400 m. southwest of Lily Lake, 12.8 km. northwest of the GNIS location of Leadville. (39.3481,-106.3713,WGS 1984) Filling the floor of this little valley, also collected here: Senecio triangularis, Pedicularis racemosa, and Viola sp. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , d: CAS(121) , d: UCR(119) , KHD ^‡ )

Habitat of Coll. No. 3108, Veratrum californicum.

Coll. No. 3108, Veratrum californicum.

Field Notes: Coll. No. 3109, 18 Jul 2023.

Name List: Senecio triangularis

3109. Senecio triangularis Hook. Meadow in a small valley between West Tennessee Creek and Lily Lake, 400 m. southwest of Lily Lake, 12.8 km. northwest of the GNIS location of Leadville. (39.3481,-106.3713,WGS 1984) With Veratrum californicum, Pedicularis racemosa, and Viola sp. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: EIU(126) , d: REGIS(128) , d: CS(124) , x-UC )

Field Notes: Coll. No. 3110, 18 Jul 2023.

Name List: Pedicularis racemosa ssp. alba

3110. Pedicularis racemosa Douglas ex Benth. ssp. alba Pennell. Leaves simple, serrate; flowers, white. Edge of lodgepole pine forest beside a meadow between West Tennessee Creek and Lily Lake, 400 m. southwest of Lily Lake, 12.8 km. northwest of the GNIS location of Leadville. (39.3479,-106.3713,WGS 1984) With Veratrum californicum, Senecio triangularis in the meadow, and Viola sp. in the forest. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: CS(124) , d: COLO(122) , d: UCR(119) , d: OBI(118) , KHD ^‡ )

Coll. No. 3110, Pedicularis racemosa var. alba.

Field Notes: Coll. No. 3111, 18 Jul 2023.

Name List: Viola adunca

3111. Viola adunca Sm. Purple flowers, long spurs. Edge of lodgepole pine forest beside a meadow between West Tennessee Creek and Lily Lake, 400 m. southwest of Lily Lake, 12.8 km. northwest of the GNIS location of Leadville. (39.3480,-106.3712,WGS 1984) With Veratrum californicum, Senecio triangularis in the meadow, and Pedicularis racemosa in the forest. 7/18/2023 West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , KHD ^‡ )

Coll. No. 3111, Viola adunca.

Field Notes: Coll. No. 3112, 18 Jul 2023.

Name List: Vaccinium scoparium

3112. Vaccinium scoparium Leiberg ex Coville. Ridge south of Lily Lake on Lily Lake Loop trail, 230 m. south of Lily Lake, 12.7 km (geodesic) northwest of Leadville. (39.3488,-106.3692,WGS 1984) Rocky top of hill between West Tennessee Creek and Lily Lake. Primary ground cover here in lodgepole pine forest with no middlestory. 7/18/2023 Lily Lake, Lake County, Colorado. (d: UCR(119) , d: COLO(122) , d: CAS(121) , d: OBI(118) , KHD ^‡ )

Habitat of Coll. No. 3112, Vaccinium scoparium.

Coll. No. 3112, Vaccinium scoparium.

Comments: 12/16/2023, Coll. No. 3112, 18 July 2023, characters observed: Perennial, low-growing; Stems, numerous narrow ridged branches “broom-like,” of current year, green, sharply angled; Leaves, alternate, lanceolate, 14 mm. × 6 mm. wide, margins serrulate, slightly revolute; Petals, united, pink;

Field Notes: Coll. No. 3113, 18 Jul 2023.

Name List: Linnaea borealis var. longiflora

3113. Linnaea borealis L. var. longiflora Torr. Western shore of Lily Lake, sprawling over forest floor at base of trees, 12.9 km. northwest of the GNIS location of Leadville. (39.3509,-106.3694,WGS 1984) 7/18/2023 Lily Lake, Lake County, Colorado. (d: OBI(118) , d: CS(124) , d: COLO(122) , d: UCR(119) , KHD ^‡ )

Lily Lake from the other side.

Coll. No. 3113, Linnaea borealis.

Field Notes: Coll. No. 3114, 18 Jul 2023.

Name List: Cardamine cordifolia

3114. Cardamine cordifolia A. Gray. Right bank of North Fork of West Tennessee Creek, 530 m. east northeast of Lily Lake, 12.7 km. north northwest of the GNIS location of Leadville. (39.3520,-106.3622,WGS 1984) Growing on the bank of creek with Micranthes odontoloma. 7/18/2023 North Fork West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , KHD ^‡ )

Coll. No. 3114, Cardamine cordifolia.

Coll. No. 3114. Cardamine cordifolia.

Field Notes: Coll. No. 3115, 18 Jul 2023.

Name List: Micranthes odontoloma

3115. Micranthes odontoloma (Piper) A. Heller. Right bank of North Fork of West Tennessee Creek, 530 m. east northeast of Lily Lake, 12.7 km. north northwest of the GNIS location of Leadville. (39.3520,-106.3623,WGS 1984) In a damp ephemeral stream channel, collected with Cardamine cordifolia. 7/18/2023 North Fork West Tennessee Creek, Lake County, Colorado. (d: OBI(118) , d: CS(124) , d: UCR(119) , KHD ^‡ )

Coll. No. 3115, Micranthes odontoloma.

Field Notes: Coll. No. 3116, 19 Jul 2023.

Name List: Agoseris glauca var. dasycephala

3116. Agoseris glauca (Pursh) Raf. var. dasycephala (Torr. & A. Gray) Jeps. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2984,-106.3170,WGS 1984) Between the road and the creek to the south, open shrubland with Artemisia tridentata, Eriogonum umbellatum, and Dasophora fritucosa. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (KHD )

Coll. No. 3116, Agoseris glauca var. dasycephala.

Field Notes: Coll. No. 3117, 19 Jul 2023.

Name List: Eriocoma lettermanii

3117. Eriocoma lettermanii (Vasey) Romansch. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2984,-106.3170,WGS 1984) Between the road and the creek to the south, open shrubland with Agoseris glauca var. dasycephala, Artemisia tridentata, Eriogonum umbellatum, and Dasiophora fruticosa. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , KHD87642^‡ )

Coll. No. 3117, Eriocoma lettermanii.

Field Notes: Coll. No. 3118, 19 Jul 2023.

Name List: Salix

3118. Salix . pistillate, past good collecting condition, one of the larger at this location (39.2980,-106.3170,WGS 1984) streamside 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (Undist. )

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 3119, 19 Jul 2023.

Name List: Linum perenne

3119. Linum perenne L. Many stems, not particularly vasiform; a few short-styled flowers among almost all long-styled. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2980,-106.3170,WGS 1984) Openings in willow thicket near creek. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , d: UCR(119) , d: OBI(118) , KHD ^‡ )

Coll. No. 3119, Linum perenne.

Field Notes: Coll. No. 3120, 19 Jul 2023.

Name List: Oxypolis fendleri

3120. Oxypolis fendleri (A. Gray) Heller. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2980,-106.3171,WGS 1984) South of the road in willow thicket, on bank of creek. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CAS(121) , d: EIU(126) , d: CS(124) , d: COLO(122) , UCR )

Field Notes: Coll. No. 3121, 19 Jul 2023.

Name List: Lonicera involucrata

3121. Lonicera involucrata (Richardson) Banks ex Spreng. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2979,-106.3171,WGS 1984) South of the road in willow thicket, streamside. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CS(124) , d: COLO(122) , d: OBI(118) , KHD ^‡ )

Coll. No. 3121, Lonicera involucrata.

Field Notes: Coll. No. 3122, 19 Jul 2023.

Name List: Bistorta bistortoides

3122. Bistorta bistortoides (Pursh) Small. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2975,-106.3173,WGS 1984) Muddy, wet place in willow thicket. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: OBI(118) , d: COLO(122) , d: REGIS(128) , KHD ^‡ )

Coll. No. 3122, Bistorta bistortoides.

Field Notes: Coll. No. 3123, 19 Jul 2023.

Name List: Pedicularis groenlandica

3123. Pedicularis groenlandica Retz. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2975,-106.3174,WGS 1984) Muddy, wet places in willow thicket, south of the road and the creek. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , d: OBI(118) , d: REGIS(128) , KHD ^‡ )

Field Notes: Coll. No. 3124, 19 Jul 2023.

Name List: Agrostis scabra

3124. Agrostis scabra Willd. Tiny little grass. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2976,-106.3174,WGS 1984) Damp openings in willow thicket, south of the road and the creek. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (KHD ^‡ )

Coll. No. 3124, Agrostis scabra.

Field Notes: Coll. No. 3125, 19 Jul 2023.

Name List: Festuca calligera

3125. Festuca calligera (Piper) Rydb. Mid-size grass. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2974,-106.3166,WGS 1984) South side of the gulch on the edges of an open aspen forest. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , KHD ^‡ )

Coll. No. 3125, ~~Festuca trachyphylla~~ Festuca cf. calligera.

Comments: 1/14/2024, Coll. No. 3125, 19 July 2023, characters observed: Perennial grass, to 35 cm., not rhizomatous; Stem, ascending at base, glabrous below inflorescence; Leaves, sheath, open, ligule, membranous ears with cilia [see Shaw (2008) fig. 242], blade, ≤0.5 mm. wide, revolute, hairy inside; Inflorescence, 1 per culm, >leaves, panicle, spreading, ascending, 90 mm. × 30 mm. wide; Spikelets, many, 7 mm. × 2 mm. wide, similar, borne singly; Glumes, lower, 3.3 mm., veins, 1(3?) [except for mid-veins, all veins on glumes and lemmas are obscure] upper, 4.0 mm., <lowest floret, veins, 1(3?), awns, 0; Florets, 4 per spikelet; Lemma, 4.5 mm., >glumes, membranous, rolled, proximally short hairy, distally scabrous, veins, #5???, glabrous, awns, #1, 2.5-4.0 mm., straight, attached end; Palea, ±=lemma, membranous; Anthers, 2.1-2.7 mm.; Ovary, apex with a couple hair-like things.

Field Notes: Coll. No. 3126, 19 Jul 2023.

Name List: Cymopterus lemmonii

3126. Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2974,-106.3166,WGS 1984) South side of the gulch on the edges of an open aspen forest. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (COLO )

Field Notes: Coll. No. 3127, 19 Jul 2023.

Name List: Aquilegia coerulea

3127. Aquilegia coerulea E. James. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2974,-106.3166,WGS 1984) South side of the gulch on the edges of an open aspen forest. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CS(124) , d: COLO(122) , d: CAS(121) , UCR )

Field Notes: Coll. No. 3128, 19 Jul 2023.

Name List: Lupinus argenteus var. rubricaulis

3128. Lupinus argenteus Pursh var. rubricaulis (Greene) S.L. Welsh. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2974,-106.3166,WGS 1984) South side of the gulch on the edges of an open aspen forest. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: CS(124) , d: COLO(122) , d: EIU(126) , CAS )

Coll. No. 3128, Lupinus argenteus var. rubricaulis.

Colorado, Pike-San Isabel National Forest, Forest Road 189: on the road. Field Notes: Coll. No. 3129, 19 Jul 2023.

Name List: Oxytropis deflexa var. sericea

3129. Oxytropis deflexa (Pall.) DC. var. sericea Torr. & A. Gray. Plants shortly caulescent, 1-3 nodes; tiny magenta flowers; peduncle elongating in fruit; mature fruit pendulous. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2977,-106.3168,WGS 1984) Full sun, openings in willow thicket just south of the creek. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: OBI(118) , d: UCR(119) , d: COLO(122) , KHD ^‡ )

Coll. No. 3129, Oxytropis sp., maybe.

Coll. No. 3129, Oxytropis deflexa var. sericea.

Field Notes: Coll. No. 3130, 19 Jul 2023.

Name List: Bistorta vivipara

3130. Bistorta vivipara (L.) Delarbre. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2979,-106.3168,WGS 1984) Growing in moss on bank of creek in a willow thicket south of the road. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , OBI )

Coll. No. 3130, Bistorta vivipara.

Field Notes: Coll. No. 3131, 19 Jul 2023.

Name List: Astragalus alpinus

3131. Astragalus alpinus L. Along Forest Road 189, about 1 km. east of County Road 18 “East Tennessee Road,” 5.69 km. (geodesic) north northwest of the GNIS location of Leadville. (39.2981,-106.3169,WGS 1984) Tiny little Astragalus in sunny opening of willow thicket, beside game trail; between the road and the creek to the south. 7/19/2023 Unnamed Gulch on Forest Road 189, Lake County, Colorado. (d: COLO(122) , d: CAS(121) , d: OBI(118) , KHD ^‡ )

Coll. No. 3131, Astragalus alpinus.

Field Notes: Coll. No. 3132, 20 Jul 2023.

Name List: Castilleja sulphurea

3132. Castilleja sulphurea Rydb. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2606,-106.2204,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: EIU(126) , d: CS(124) , d: REGIS(128) , KHD ^‡ )

Field Notes: Coll. No. 3133, 20 Jul 2023.

Name List: Eremogone fendleri

3133. Eremogone fendleri (A. Gray) Ikonnikov. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2606,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: CS(124) , d: CAS(121) , d: EIU(126) , CDA )

Field Notes: Coll. No. 3134, 20 Jul 2023.

Name List: Festuca calligera

3134. Festuca calligera (Piper) Rydb. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2606,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: OBI(118) , KHD ^‡ )

Coll. No. 3134, ~~Festuca trachyphylla~~ Festuca cf. calligera.

Comments: 1/16/2024, Coll. No. 3134, 20 July 2023, characters observed: Perennial grass, 30-35 cm., forming dense clumps; Stem, glabrous; Leaves, most basal, on flowering culm: sheath, 80 mm., open >½, ligule, membranous, u-shaped [as illustrated in Shaw (2008) and FNANM], <1 mm.; blade, 40-60 mm. × 0.4 mm. dia., revolute, adaxial (inside) hairy, abaxial scabrous; Inflorescence, 1 per culm, >leaves, panicle, 70 mm. × 10-15 mm. wide; Spikelets, many, 6 mm. (plus awns) × 2.2 mm. wide, similar, borne singly; Glumes, lower, 2.5 mm., veins, #1, upper, 4.0 mm., <lowest floret, veins, #3 awns, 0; Florets, 4 per spikelet; Lemma, 4.5 mm., glabrous, distally scabrous, veins, #5, awns, #1, 2.5 mm., straight attached end; Palea, 4.6 mm., ±=lemma; Anthers, 2.6 mm.; Ovary, glabrous.

Field Notes: Coll. No. 3135, 20 Jul 2023.

Name List: Cymopterus lemmonii

3135. Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2605,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: CS(124) , d: EIU(126) , KHD 82085^‡ , UCR308396^‡ )

Field Notes: Coll. No. 3136, 20 Jul 2023.

Name List: Penstemon whippleanus

3136. Penstemon whippleanus A. Gray. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2606,-106.2204,WGS 1984) Sunny open southeast-facing slope. One of the specimens has several insect galls. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , KHD ^‡ )

Field Notes: Coll. No. 3137, 20 Jul 2023.

Name List: Oxytropis splendens

3137. Oxytropis splendens Douglas ex Hook. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2607,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: CS(124) , OBI )

Coll. No. 3137, Oxytropis splendens.

Field Notes: Coll. No. 3138, 20 Jul 2023.

Name List: Symphyotrichum foliaceum var. apricum

3138. Symphyotrichum foliaceum (DC.) G. L. Nesom var. apricum (A. Gray) G. L. Nesom. Quite glandular-hairy. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2607,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: OBI(118) , KHD00080563^‡ )

Coll. No. 3138, Symphyotrichum foliaceum var. apricum.

Field Notes: Coll. No. 3139, 20 Jul 2023.

Name List: Vaccinium cespitosum

3139. Vaccinium cespitosum Michx. South-facing slope in full sun, above Evans Gulch, at the end of County Road 3, 6.33 km.(geodesic) east northeast of the GNIS location of Leadville. (39.2607,-106.2203,WGS 1984) 7/20/2023 Evans Gulch, Lake County, Colorado. (d: OBI(118) , KHD ^‡ )

Coll. No, 3139, Vaccinium cespitosum.

Comments: 12/16/2023, Coll. No. 3139, 20 July 2023, characters observed: Perennial, low-growing; Stems, of current year, terete, yellow-green, finely puberulent in patches (not in lines); Leaves, alternate, oblanceolate, 20 mm. × 5.5 mm. wide, margin serrulate; No flowers or fruit.

Field Notes: Coll. No. 3140, 20 Jul 2023.

Name List: Calochortus gunnisonii

3140. Calochortus gunnisonii S. Watson. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2607,-106.2204,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: COLO(122) , UCR )

Field Notes: Coll. No. 3141, 20 Jul 2023.

Name List: Eriogonum umbellatum var. majus

3141. Eriogonum umbellatum Torrey, Ann. Lyceum Nat. Hist. New York. 2: 241. 1827. var. majus Hook. Perianth light yellow. Middle section of Evans Gulch, near Conley Lakes and the Diamond Mine, 4.6 mi. by road east of the GNIS location of Leadville. (39.2607,-106.2203,WGS 1984) Sunny open southeast-facing slope. 7/20/2023 Evans Gulch, Lake County, Colorado. (d: EIU(126) , d: CS(124) , d: COLO(122) , CAS )

Coll. No. 3141, Eriogonum umbellatum var. majus.

Field Notes: Coll. No. 3142, 20 Jul 2023.

Name List: Cycloloma atriplicifolium

3142. Cycloloma atriplicifolium (Spreng.) J. M. Coult. On the edge of a mowed area, in the hydroseeded �native� area, north corner of park on 23rd Street opposite Table Drive, 1.74 km. southeast of the GNIS location of Golden (39.7490,-105.2080,WGS 1984) DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022. This 2023 collection was made, therefore, in the second growing season after park construction. Not previously collected in Golden; unclear whether this plant was previously here, brought in with the soil amendment, or was a contaminant in the seed mix. 7/22/2023 DeLong Park (City of Golden), Jefferson County, Colorado. (KHD ^‡ )

Coll. No. 3142, Cycloloma atriplicifolium.

Field Notes: Coll. No. 3143, 26 Jul 2023.

Name List: Veronica peregrina var. xalapensis

3143. Veronica peregrina L. var. xalapensis (Kunth) H.St.John. White flowers. Muddy stream bed of upper meadow accessed by way of Pyrenees Lane, 40 m. northeast of line shack, 13.8 km. (geodesic) northwest of the GNISlocation of Golden. (39.8132,-105.3633,WGS 1984) Sunny steam bed, with Stellaria longipes and Montia chamissoi. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (JCOS )

Field Notes: Coll. No. 3144, 26 Jul 2023.

Name List: Montia chamissoi

3144. Montia chamissoi (Spreng.) Greene. Meadow north of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 40 m. northeast of the line shack, 1.09 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8132,-105.3634,WGS 1984) Muddy, wet but not flowing creek bed. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (COLO )

Field Notes: Coll. No. 3145, 26 Jul 2023.

Name List: Stellaria longipes ssp. longipes

3145. Stellaria longipes Goldie ssp. longipes. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 40 m. northeast of the line shack, 1.09 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8132,-105.3634,WGS 1984) In the muddy, wet, but not flowing, creek bed; also here: Montia chamissoi, Veronica peregrina, and Potentilla norvegica. Same as Coll. No. 3006. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , d: EIU(126) , CS )

Field Notes: Coll. No. 3146, 26 Jul 2023.

Name List: Bouteloua gracilis

3146. Bouteloua gracilis (Kunth) Lag. ex Griffiths. Comparatively short stature for this grass. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 40 m. northeast of the line shack, 1.08 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8132,-105.3634,WGS 1984) 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , JCOSs.n. , REGISs. n. )

Coll. No. 3146, Bouteloua gracilis.

Field Notes: Coll. No. 3147, 26 Jul 2023.

Name List: Oenothera villosa

3147. Oenothera villosa Thunb. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 43 m. northeast of the line shack, 1.08 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8132,-105.3633,WGS 1984) Sunny meadow. Probably var. strigosa if infraspecific names are to be applied. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: REGIS(128) , JCOS )

Field Notes: Coll. No. 3148, 26 Jul 2023.

Name List: Rorippa palustris

3148. Rorippa palustris (L.) Besser. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 27 m. northeast of the line shack, 1.08 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3633,WGS 1984) Streambed, waterlogged but not flowing. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: UCR(119) , d: CS(124) , JCOS , KHD00080564^‡ )

Coll. No. 3148, Rorippa palustris.

Field Notes: Coll. No. 3149, 26 Jul 2023.

Name List: Hesperostipa comata

3149. Hesperostipa comata (Trin. & Rupr.) Barkworth. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 45 m. northeast of the line shack, 1.08 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8132,-105.3633,WGS 1984) Sunny meadow, also collected here: Oenothera villosa, Veronica peregrina var. xalapensis, and Bouteloua gracilis. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (JCOSs.n. , OBI^‡ , UCR307098^‡ )

Field Notes: Coll. No. 3150, 26 Jul 2023.

Name List: Antennaria microphylla

3150. Antennaria microphylla Rydb. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 35 m. east northeast of the line shack, 1.08 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3632,WGS 1984) East side of meadow, edge of forest with aspen, spruce and ponderosa pine, growing with Antennaria parviflora. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (JCOS , KHD00080565^‡ )

Coll. No. 3150, Antennaria microphylla

Field Notes: Coll. No. 3151, 26 Jul 2023.

Name List: Astragalus alpinus

3151. Astragalus alpinus L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 53 m. east northeast of the line shack, 1.06 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3630,WGS 1984) East side of meadow, edge of forest af aspen, spruce and ponderosa pine. Circumboreal. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: REGIS(128) , JCOS , KHD00080566^‡ )

Comments: 1/19/2024, Coll. No. 3151, 26 July 2023, characters observed: Perennial herb, to 25 cm., sprawling, ascending, hairs basifixed, white and black; Leaves, compound, 69 mm. × 23 mm. wide, leaflets, #21, 11 mm. × 4 mm. wide, ovate, stipules, connate into a sheath; Calyx, tube 2 mm. + lobes 2 mm., not inflated, hairs black; Flowers, #10-12, 8 mm., close raceme but not crowded like A. agrestis, banner, flexed at 4 mm., keel, 9 mm., >wings; Fruit, stipe, 1.5 mm., legume, 10.5 mm. × 3 mm. wide, pendulous, hairs black.

Field Notes: Coll. No. 3152, 26 Jul 2023.

Name List: Danthonia parryi

3152. Danthonia parryi Scribn. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 53 m. east northeast of the line shack, 1.06 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3630,WGS 1984) East side of meadow, edge of forest of aspen, spruce and ponderosa pine. 7/27/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS , KHD00080567^‡ )

Coll. No. 3152, Danthonia parryi.

Comments: 1/19/2024, Coll. No. 3152, 26 July 2023, characters observed: Panicle erect to ascending (spreading); Spikelets, 14-16 mm., 5+ florets; Glumes, 16 mm., ±equal, >lemma; Lemma, 13 mm., tip, deeply bifid, awn, #1, 13 mm., attached back, hairy on margins, veins, and some areas of back, but most of back is glabrous; Anthers, 3.2 mm.

Field Notes: Coll. No. 3154, 26 Jul 2023.

Name List: Campanula rotundifolia

3154. Campanula rotundifolia L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, meadow 53 m. east northeast of the line shack, 1.06 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3630,WGS 1984) East side of meadow, edge of forest of aspen, spruce and ponderosa pine. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , JCOS )

Field Notes: Coll. No. 3155, 26 Jul 2023.

Name List: Astragalus miser var. oblongifolius

3155. Astragalus miser Douglas ex. Hook. var. oblongifolius (Rydb.) Cronquist. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 61 m. east northeast of the line shack, 1.05 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3629,WGS 1984) On an old road through forest of aspen, spruce and ponderosa pine, with Oxytropis lambertii and Packera fendleri. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , JCOS , KHD00080568^‡ )

Coll. No. 3155, Astragalus miser var. oblongifolius.

Field Notes: Coll. No. 3156, 26 Jul 2023.

Name List: Penstemon glaber var. alpinus

3156. Penstemon glaber Pursh var. alpinus (Torr.) A. Gray. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 71 m. east northeast of the line shack, 1.05 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3628,WGS 1984) On the edge of an old road through forest of aspen, spruce and ponderosa pine, with Oxytropis lambertii and Packera fendleri. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (Undist. )

Coll. No. 3156, Penstemon glaber var. alpinus.

Comments: 1/20/2024, Coll. No. 3156, 26 July 2023, characters observed: Perennial herb, to 30 cm., not mat-forming; Leaves, opposite, sessile, lanceolate to oblanceolate, 90 mm. × 14 mm. wide, glabrous, entire (not undulate or crisped); Inflorescence, axis, glabrous; Flowers, 30 mm., blue; Stamens, included; Staminode, slightly notched at tip; Anthers, 3.7 mm., sacs, short hairy opposite dehiscence.

Field Notes: Coll. No. 3157, 26 Jul 2023.

Name List: Sedum lanceolatum

3157. Sedum lanceolatum Torr. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 79 m. east northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3627,WGS 1984) On the edge of an old road through forest of aspen, spruce and ponderosa pine, with Packera fendleri, Oxytropis lambertii, and Penstemon glaber var. alpinus. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CS(124) , JCOS )

Field Notes: Coll. No. 3158, 26 Jul 2023.

Name List: Koeleria macrantha

3158. Koeleria macrantha (Ledeb.) Schult. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 70 m. east northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3628,WGS 1984) In the middle of an old road through forest of aspen, spruce and ponderosa pine, with Packera fendleri, Sedum lanceolatum, Oxytropis lambertii, and Penstemon glaber var. alpinus. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , CAS718407^‡ , JCOSs.n. )

Field Notes: Coll. No. 3159, 26 Jul 2023.

Name List: Oxytropis lambertii

3159. Oxytropis lambertii Pursh. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 70 m. east northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3628,WGS 1984) Beside an old road through forest of aspen, spruce and ponderosa pine, with Packera fendleri, Sedum lanceolatum, Penstemon glaber var. alpinus, and Koeleria macrantha. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: CDA(120) , JCOS )

Field Notes: Coll. No. 3160, 26 Jul 2023.

Name List: Astragalus laxmannii var. robustior

3160. Astragalus laxmannii Jacq. var. robustior (Hook.) Barneby & S. L. Welsh. Woody taproot, caulescent, sprawling, dolabriform hairs, large leaves and ochroleucous flowers. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 80 m. east northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8130,-105.3627,WGS 1984) Beside an old road through forest of aspen, spruce and ponderosa pine, with Packera fendleri, Sedum lanceolatum, Oxytropis lambertii, Penstemon glaber var. alpinus, and Koeleria macrantha. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , JCOS )

Coll. No. 3160, Astragalus laxmannii var. robustior.

Field Notes: Coll. No. 3161, 26 Jul 2023.

Name List: Calochortus gunnisonii

3161. Calochortus gunnisonii S. Watson. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 110 m. southeast of the line shack, 1.05 km. west southwest of Mt. Tom, 13.65 km. (geodesic) northwest of the GNIS location of Golden. (39.8124,-105.3625,WGS 1984) Small patch at the end of an old road. Sunny opening in forest of aspen, spruce, and ponderosa pine. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: CAS(121) , d: CS(124) , JCOS )

Field Notes: Coll. No. 3162, 26 Jul 2023.

Name List: Packera fendleri

3162. Packera fendleri (A. Gray) W.A. Weber & �. L�ve. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 63 m. southeast of the line shack, 1.05 km. west southwest of Mt. Tom, 13.65 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3629,WGS 1984) On an old road through forest of aspen, spruce and ponderosa pine, with Sedum lanceolatum, Oxytropis lambertii, Penstemon glaber var. alpinus, and Koeleria macrantha. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CAS(121) , d: COLo(122) , JCOS )

Coll. No. 3162, Packera fendleri.

Field Notes: Coll. No. 3163, 26 Jul 2023.

Name List: Polemonium foliosissimum

3163. Polemonium foliosissimum A. Gray. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, in front of the line shack, 1.07 km. west southwest of Mt. Tom, 13.7 km. (geodesic) northwest of the GNIS location of Golden. (39.8129,-105.3635,WGS 1984) Sunny spot, with grasses and small shrubs. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , d: COLO(122) , JCOS )

Field Notes: Coll. No. 3164, 26 Jul 2023.

Name List: Solidago missouriensis

3164. Solidago missouriensis Nutt. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 72 m. north of the line shack, 1.07 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8135,-105.3634,WGS 1984) Sunny openings in grass. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (COLO , CS , EIU , JCOSs.n. , REGISs.n. )

Field Notes: Coll. No. 3165, 26 Jul 2023.

Name List: Eriogonum alatum

3165. Eriogonum alatum Torrey in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers. 168, plate 8. 1853. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 73 m. north of the line shack, 1.07 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8135,-105.3634,WGS 1984) Open, sunny, meadow with Solidago missouriensis and Elymus elymoides. Semelparous. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , JCOS )

Comments: 7/26/2023, For the JCOS voucher, lower stem and caudex split and combined with partial inflorescence from another plant.

Field Notes: Coll. No. 3166, 26 Jul 2023.

Name List: Elymus elymoides

3166. Elymus elymoides (Raf.) Swezey. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 73 m. north of the line shack, 1.07 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8135,-105.3634,WGS 1984) Open, sunny, meadow with Solidago missouriensis and Eriogonum alatum. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , JCOS , KHD ^‡ )

Field Notes: Coll. No. 3167, 26 Jul 2023.

Name List: Monarda fistulosa

3167. Monarda fistulosa L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 128 m. north of the line shack, 1.07 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8140,-105.3635,WGS 1984) Sunny meadow, also collected here, Oreocarya virgata and Astragalus alpinus. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (Undist. )

Field Notes: Coll. No. 3168, 26 Jul 2023.

Name List: Astragalus alpinus

3168. Astragalus alpinus L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 128 m. north of the line shack, 1.07 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8140,-105.3634,WGS 1984) Sunny meadow, also collected here, Oreocarya virgata and Monarda fistulosa. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , JCOS )

Field Notes: Coll. No. 3169, 26 Jul 2023.

Name List: Galium boreale

3169. Galium boreale L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 260 m. north of the line shack, 1.11 km. west southwest of Mt. Tom, 13.9 km. (geodesic) northwest of the GNIS location of Golden. (39.8151,-105.3643,WGS 1984) Bank of stream with aspen, Douglas fir, and ponderosa pine, also collected here: Nassella viridula. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (COLO , JCOSs.n. , OBI^‡ , UCR307096^‡ )

Name List: Cerastium arvense ssp. strictum

3169.1 Cerastium arvense L. ssp. strictum Gaudin. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 260 m. north of the line shack, 1.11 km. west southwest of Mt. Tom, 13.9 km. (geodesic) northwest of the GNIS location of Golden. (39.8151,-105.3643,WGS 1984) Bank of stream with aspen, Douglas fir, and ponderosa pine, also collected here: Nassella viridula. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: JCOS(115) )

Field Notes: Coll. No. 3170, 26 Jul 2023.

Name List: Nassella viridula

3170. Nassella viridula (Trin.) Barkworth. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 260 m. north of the line shack, 1.11 km. west southwest of Mt. Tom, 13.9 km. (geodesic) northwest of the GNIS location of Golden. (39.8152,-105.3642,WGS 1984) Bank of stream with aspen, Douglas fir, and ponderosa pine, also collected here: Galium boreale. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: UCR(119) , d: CAS(121) , JCOS )

Field Notes: Coll. No. 3171, 26 Jul 2023.

Name List: Oreocarya virgata

3171. Oreocarya virgata (Porter) Greene. Partially eaten. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 140 m. north northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.9 km. (geodesic) northwest of the GNIS location of Golden. (39.8141,-105.3631,WGS 1984) On a small berm from some long-ago disturbance. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , JCOS )

Field Notes: Coll. No. 3171.1, 26 Jul 2023.

Name List: Penstemon virgatus var. asa-grayi

3171.1 Penstemon virgatus A. Gray var. asa-grayi (Crosswh.) Dorn. Leaves lance-linear, flowers just starting to open, North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 140 m. north northeast of the line shack, 1.04 km. west southwest of Mt. Tom, 13.9 km. (geodesic) northwest of the GNIS location of Golden. (39.8141,-105.3631,WGS 1984) On a small berm from some long-ago disturbance, with Oreocarya virgata. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (JCOS )

Field Notes: Coll. No. 3172, 26 Jul 2023.

Name List: Potentilla norvegica

3172. Potentilla norvegica L. North of Guy Gulch, accessed by a ranch road off of Pyrenees Lane, 30 m. north northeast of the line shack, 1.09 km. west southwest of Mt. Tom, 13.8 km. (geodesic) northwest of the GNIS location of Golden. (39.8131,-105.3634,WGS 1984) Beside stream near line shack, collected nearby: Rorippa palustris, Stellaria longipes ssp. longipes, and Veronica peregrina var. xalapensis. Circumpolar. 7/26/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , JCOS , KHD00080569^‡ )

Field Notes: Coll. No. 3173, 31 July 2023.

Name List: Equisetum arvense

3173. Equisetum arvense L. Southwest side of the gulch, 680 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7983,-105.3606,WGS 1984) In shaded seep beside creek, with Betula occidentalis, willows , and cottonwoods. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , CAS718151^‡ , CDA56597^‡ , JCOS , KHD00080570^‡ , OBI^‡ , REGIS )

Field Notes: Coll. No. 3174, 31 July 2023.

Name List: Betula occidentalis

3174. Betula occidentalis Hook. Southwest side of the gulch, 680 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7983,-105.3606,WGS 1984) Shaded lower terrace just above creek, with Equisteum arvense, willows , and cottonwoods. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , CDA56596^‡ , JCOSs.n. , KHD00080571^‡ )

Field Notes: Coll. No. 3175, 31 July 2023.

Name List: Erigeron speciosus

3175. Erigeron speciosus (Lindl.) DC. Southwest side of the gulch, 690 m. northwest of Centennial Ranch, 12.9 km. northwest of the GNIS location of Golden. (39.7983,-105.3607,WGS 1984) Steep slope below rock outcrop, with Senecio pudicus. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: OBI(118) , JCOS , KHD00080573^‡ )

Comments: 1/25/2024, Coll. No. 3175, 31 July 2023, characters observed: Perennial herb, 65 cm.; Stem, hairs, pilose, spreading, glandular at base of head; Leaves, basal, unknown, proximal cauline, elliptic, petiole 80 mm. + blade 70 mm. × 11 mm. wide (6.4:1), distal cauline, ovate, sessile, 60 mm. × 18 mm. wide (3.3:1), evenly pilose, eglandular, margins, entire; Inflorescence, heads, 5-8 per stem, showy; Involucre, 7 mm. × 13 mm. wide; Phyllaries, in 2+ series, 8 mm. × 1 mm. wide, outer green, >inner, inner becoming chartaceous, hairy, stipitate glandular; Receptacle, epaleate; Ray flowers, many, tube 3 mm. + blade 8 mm. × 0.7 mm. wide, lavender, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.5 mm., yellow; Pappus, short hairs, 0.5 mm., + well-developed bristles, 4.5 mm.; Cypsela, 1.5 mm., hairy.

Field Notes: Coll. No. 3176, 31 July 2023.

Name List: Senecio pudicus

3176. Senecio pudicus Greene. Composite. with nodding flowers. Southwest side of the gulch, 690 m. northwest of Centennial Ranch, 12.9 km. northwest of the GNIS location of Golden. (39.7983,-105.3607,WGS 1984) Steep slope above creek, twining through Symphoricarpos sp., with Erigeron speciosus. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , JCOS , KHD00080572^‡ )

Coll. No. 3176, Senecio pudicus.

Field Notes: Coll. No. 3177, 31 July 2023.

Name List: Eriogonum umbellatum var. ramulosum

3177. Eriogonum umbellatum Torr. var. ramulosum Reveal. Southwest side of County Road 70 and the gulch, 600 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden, and 12.7 km. northwest of Buffalo Bill's grave. (39.7978,-105.3599,WGS 1984) Outwash delta of small watercourse with smooth brome, snowberry, aspen, and water birch. This collection fits the description of var. ramulosum with the branched inflorescence and bracted branches, whereas other parts of same plant do not. Coll. No. 3078 made nearby was similarly ambiguous as to variety. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (CS )

Coll. No. 3177, Eriogonum umbellatum var. ramulosum.

Field Notes: Coll. No. 3178, 31 July 2023.

Name List: Heterotheca villosa var. nana

3178. Heterotheca villosa (Pursh) Shinners var. nana (A. Gray) Semple. Southwest side of County Road 70 and the gulch, 618 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7977,-105.3602,WGS 1984) Open southeast-facing slope above small gulch tributary to Guy Gulch. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , d: COLO(122) , JCOS )

Field Notes: Coll. No. 3179, 31 July 2023.

Name List: Helianthus pumilus

3179. Helianthus pumilus Nutt. Southwest side of County Road 70 and the gulch, 615 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3602,WGS 1984) Open southeast-facing slope of ridge above small gulch tributary to Guy Gulch. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , d: UCR(119) , d: CS(124) , JCOS )

Field Notes: Coll. No. 3180, 31 July 2023.

Name List: Dieteria bigelovii var. bigelovii

3180. Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman var. bigelovii. Southwest side of County Road 70 and the gulch, 615 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3602,WGS 1984) Open southeast-facing slope of ridge above small gulch tributary to Guy Gulch, also here: Helianthus pumilis and Heterotheca villosa. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS )

Field Notes: Coll. No. 3181, 31 July 2023.

Name List: Bromus lanatipes

3181. Bromus lanatipes (Shear) Rydb. Spikelets pendant, lemmas soft hairy. Southwest side of County Road 70 and the gulch, 615 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3602,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, with: Dieteria bigelovii, Helianthus pumilis, and Heterotheca villosa. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: EIU(126) , JCOS , KHD ^‡ )

Field Notes: Coll. No. 3182, 31 July 2023.

Name List: Euphorbia brachycera

3182. Euphorbia brachycera Engelm. Southwest side of County Road 70 and the gulch, 620 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7978,-105.3602,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, with: Dieteria bigelovii, Helianthus pumilis, Heterotheca villosa, and Bromus lanatipes. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) , d: OBI(118) , JCOS )

Field Notes: Coll. No. 3183, 31 July 2023.

Name List: Muhlenbergia montana

3183. Muhlenbergia montana (Nutt.) Hitchc. Southwest side of County Road 70 and the gulch, 620 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7977,-105.3604,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, with: Dieteria bigelovii, Helianthus pumilis, Heterotheca villosa, Euphorbia brachycera, and Bromus lanatipes. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: OBI(118) , JCOS , KHD ^‡ )

Field Notes: Coll. No. 3183.1, 31 July 2023.

Name List: Polygonum douglasii

3183.1 Polygonum douglasii Greene. Southwest side of County Road 70 and the gulch, 620 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7977,-105.3604,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, with: Dieteria bigelovii, Helianthus pumilis, Heterotheca villosa, Euphorbia brachycera, and Bromus lanatipes. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: EIU(126) )

Field Notes: Coll. No. 3184, 31 July 2023.

Name List: Orobanche fasciculata

3184. Orobanche fasciculata Nutt. Southwest side of County Road 70 and the gulch, 635 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7977,-105.3604,WGS 1984) Several plants between two Cercocarpus montanus, with a few Eriogonum umbellatum, no Artemisia sp. nearby. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS )

Coll. No. 3184, Orobanche fasciculata.

Field Notes: Coll. No. 3185, 31 July 2023.

Name List: Polygonum douglasii

3185. Polygonum douglasii Greene. Southwest side of County Road 70 and the gulch, 635 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3604,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (REGIS )

Field Notes: Coll. No. 3186, 31 July 2023.

Name List: Mirabilis nyctaginea

3186. Mirabilis nyctaginea (Michx.) MacMill. Infested with aphids, as usual with this plant. Southwest side of County Road 70 and the gulch, 635 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3605,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, also collected here: Dieteria bigelovii, Orobanche fasciculata, Polygonum douglasii, and Muhlenbergia montana. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: JCOS(115) )

Field Notes: Coll. No. 3187, 31 July 2023.

Name List: Symphyotrichum porteri

3187. Symphyotrichum porteri (A. Gray) G.L. Nesom. Few plants, flowers beginning to open. Southwest side of County Road 70 and the gulch, 640 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7973,-105.3607,WGS 1984) Lightly shaded floor of gulch. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: OBI(118) , JCOS )

Field Notes: Coll. No. 3188, 31 July 2023.

Name List: Thinopyrum intermedium

3188. Thinopyrum intermedium (Host) Barkworth & D.R. Dewey. Strongly rhizomatous, glumes tough, tip small offset mucro. Southwest side of County Road 70 and the gulch, 660 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7975,-105.3609,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, also collected here: Artemisia ludoviciana, Symphyotrichum porteri, Allium cernuum and Muhlenbergia montana. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , d: EIU(126) , JCOS )

Comments: 1/28/2024, Coll. No. 3188, characters observed: Perennial grass, 110 cm., strongly rhizomatous; Leaves, sheath, open, one side ciliate, other side chartaceous; ligule, membraneous, <1 mm., auricles, 1.3 mm., longer on one side, blade, 200 mm. × 4.5 mm. wide, ±flat, somewhat scabrous; Inflorescence, 1 per culm, >leaves, 2-sided spike, 190 mm. × 10 mm. wide; Spikelets, many, 19 mm. × 7 mm. wide, similar, borne singly, sessile; Glumes, lower, 8 mm., veins, #5, upper, 8.5 mm., <lowest floret, veins, #6, rounded, tough, veins scabrous + a few longer hairs, awns, 0, tip, offset; Florets, #6 (+1); Lemma, 11.2 mm., >glumes, indurate, tan center, green edges, veins, 5, hairy on right margin, awn, tip 0.2 mm, attached, end; Palea, 10 mm., <lemma (but not by much), membraneous, keel, ciliate, veins, green, tip, blunt; Anthers, 4.3 mm.

Field Notes: Coll. No. 3189, 31 July 2023.

Name List: Allium cernuum

3189. Allium cernuum Roth. Flowers just beginning to open. Southwest side of County Road 70 and the gulch, 660 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7975,-105.3609,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, also collected here: Artemisia ludoviciana, Symphyotrichum porteri, Muhlenbergia montana, and Thinopyrum intermedium. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (EIU , JCOSs.n. , OBI^‡ )

Coll. No. 3189, Allium cernuum.

Field Notes: Coll. No. 3190, 31 July 2023.

Name List: Artemisia ludoviciana ssp. incompta

3190. Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck. Small plants, leaves deeply lobed, involucres small, in flower. Southwest side of County Road 70 and the gulch, 660 m. northwest of Centennial Ranch, 12.8 km. northwest of the GNIS location of Golden. (39.7976,-105.3609,WGS 1984) Sunny southeast-facing rocky slope, north ridge above small gulch tributary to Guy Gulch, also collected here: Symphyotrichum porteri, Allium cernuum, Muhlenbergia montana, and Thinopyrum intermedium. 7/31/2023 Guy Gulch, Jefferson County, Colorado. (d: CS(124) , d: COLO(122) , JCOSs.n. , KHD ^‡ )

Coll. No. 3190, Artemisia ludoviciana ssp. incompta.

Field Notes: Coll. No. 3191, 27 Aug 2023.

Name List: Artemisia ludoviciana ssp. ludoviciana

3191. Artemisia ludoviciana Nutt. ssp. ludoviciana. Perennial herb, rhizomatous, not woody, infl. a narrow panicle, leaves entire. Southeast corner of Survey Field, 2.45 km. (geodesic) south of the GNIS location of Golden (39.7335,-105.2184,WGS 1984) Highest mixed grass prairie near Rocky Mountain Front Range scarp, also nearby: Asclepias pumila, Ambrosia psilostachya, Artemisia dracunculus, Liatris punctata, and Evolvulus nuttallianus. 8/17/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: COLO(122) , CS202191^‡ , KHD87505^‡ , OBI^‡ )

Coll. No. 3191, Artemisia ludoviciana ssp. ludoviciana.

Field Notes: Coll. No. 3192, 27 Aug 2023.

Name List: Eriogonum effusum

3192. Eriogonum effusum Nuttall, Proc. Acad. Nat. Sci. Philadelphia. 4: 15. 1848. Leaves withered. Top of slope overlooking an unnamed stream to the northwest, southeast quadrant of the Survey Field, 2.36 km. (geodesic) south of the GNIS location of Golden. (39.7343,-105.2190,WGS 1984) Highest mixed grass prairie near Rocky Mountain Front Range scarp, also nearby: Gutierrezia sarothrae, Senecio spartioides, and Cercocarpus montanus. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: OBI(118) , d: CS(124) , d: EIU(126) , d: UCR(119) , d: COLO(122) , KHD ^‡ )

Coll. No. 3192, Eriogonum effusum.

Field Notes: Coll. No. 3193, 27 Aug 2023.

Name List: Gutierrezia sarothrae

3193. Gutierrezia sarothrae (Pursh) Britton & Rusby. Flowers just beginning to open. Top of northwest-facing slope overlooking an unnamed stream to the northwest, southeast quadrant of the Survey Field, 2.36 km. (geodesic) south of the GNIS location of Golden. (39.7343,-105.2190,WGS 1984) Highest Great Plains mixed grass near Rocky Mountain Front Range scarp, also nearby: Senecio spartioides, Eriogonum effusum, and Cercocarpus montanus. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: EIU(126) , CAS718171^‡ , CDA56595^‡ , CS202193^‡ )

Field Notes: Coll. No. 3194, 27 Aug 2023.

Name List: Saponaria officinalis

3194. Saponaria officinalis L. Weed: CO DofA, List: B. In a former oxbow of an unnamed creek in the southeast quadrant of the Survey Field, 2.28 km. (geodesic) south of the GNIS location of Golden. (39.7350,-105.2195,WGS 1984) Large patch in a larger patch of Bromus inermis. Colorado Noxious Weed List B. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: COLO(122) , d: CDA(120) , d: UCR(119) , OBI )

Field Notes: Coll. No. 3195, 27 Aug 2023.

Name List: Liatris punctata

3195. Liatris punctata Hook. Small divide between two unnamed streams, southeast quadrant of Survey Field, 2.23 km. (geodesic) south of the GNIS location of Golden. (39.7355,-105.2205,WGS 1984) Highest Great Plains at Rocky Mountain Front Range scarp, more or less disturbed mixed grass, where some quarrying has occurred, also collected here: Cleomella serrulata, Salsola tragus and Eriocoma hymenoides. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: COLO(122) , d: EIU(126) , OBI^‡ , UCR307025^‡ )

Coll. No. 3195, Liatris punctata.

Field Notes: Coll. No. 3196, 27 Aug 2023.

Name List: Cleomella serrulata

3196. Cleomella serrulata (Pursh) Roalson & J. C. Hall. Small divide between two unnamed streams, southeast quadrant of Survey Field, 2.23 km. (geodesic) south of the GNIS location of Golden. (39.7354,-105.2205,WGS 1984) Highest Great Plains at Rocky Mountain Front Range scarp, edge of disturbed area, where some quarrying has occurred, also collected here: Liatris punctata, Salsola tragus and Eriocoma hymenoides. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: UCR(119) , d: OBI(118) , d: COLO(122) , KHD ^‡ )

Coll. No. 3196, Cleomella serrulata.

Field Notes: Coll. No. 3197, 27 Aug 2023.

Name List: Salsola tragus

3197. Salsola tragus L. Small divide between two unnamed streams, southeast quadrant of Survey Field, 2.23 km. (geodesic) south of the GNIS location of Golden. (39.7354,-105.2206,WGS 1984) Highest Great Plains at Rocky Mountain Front Range scarp, disturbed area of limestone mining, also collected here: Liatris punctata, Cleomella serrulata and Eriocoma hymenoides. 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: OBI(118) , d: COLO(122) , d: UCR(119) , KHD ^‡ )

Coll. No. 3197, Salsola tragus.

Field Notes: Coll. No. 3198, 27 Aug 2023.

Name List: Symphyotrichum ericoides

3198. Symphyotrichum ericoides (Linnaeus) G. L. Nesom. Bank of unnamed creek, near southern boundary of the southeast quadrant of Survey Field, 2.49 km. (geodesic) south of the GNIS location of Golden. (39.7332,-105.2208,WGS 1984) 8/27/2023 Colorado School of Mines Survey Field, Jefferson County, Colorado. (d: CS(124) , d: REGIS(128) , d: EIU(126) , COLO )

Coll. No. 3198, Symphyotrichum ericoides.

Field Notes: Coll. No. 3199, 29 Aug 2023.

Name List: Humulus neomexicanus

3199. Humulus neomexicanus (A. Nelson & Cockerell) Rydb. Mouth of Clear Creek Canyon, hill side of Welch Ditch, near junction of climbing access trail and at a gate formerly used to close access to the trail, 3.39 km. (geodesic) west of the GNIS location of Golden. (39.7494,-105.2505,WGS 1984) Nearly all above the flume, small amount below, with Clematis ligusticifolia, Ribes cereum, Holodiscus dumosus, and Brickellia californica. GPS coordinates place collection on the Peaks to Plains Trail about 25 m. southwest of actual location, perhaps because of the steepness of the cliffs here. One of three collections made along the Welch Ditch on this date. 8/29/2023 Welch Ditch, Jefferson County, Colorado. (JCOSs.n. , KHD 87493^‡ , OBI^‡ , UCR307018^‡ )

Coll. No. 3199, Humulus neomexicanus on the Welch Ditch.

Coll. No. 3199, Humulus neomexicanus.

Field Notes: Coll. No. 3200, 29 Aug 2023.

Name List: Humulus neomexicanus

3200. Humulus neomexicanus (A. Nelson & Cockerell) Rydb. Mouth of Clear Creek Canyon, beside the flume of the Welch Ditch, 2.53 km. (geodesic) west southwest of the GNIS location of Golden. (39.7468,-105.2483,WGS 1984) Sunny southwest-facing site, upper side of the flume, in a small steep gulch, with Holodiscus dumosus, and Cercocarpus montanus. 8/28/2023 Welch Ditch, Jefferson County, Colorado. (d: COLO(122) , d: CS(124) , CAS718154^‡ , CDA56593^‡ )

Coll. No. 3200, Humulus neomexicanus

Coll. No. 3200, Humulus neomexicanus.

Date and Time Page Generated: 4/4/2026, 8:09:20 PM