Eastern Mojave Vegetation Obscure rhizome on Coll. No. 2176, Bromus pumpellianus  
 

 

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  Poaceae Bromus pumpellianus
Scanned 27 January 2020.

Plants of Colorado
Poaceae

Bromus pumpellianus Scribn.  Pumpelly's Brome.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60 km. south of the GNIS location of Golden. 39.3406N, 105.2609W. WGS 1984 Elev. 2411 m. Also collected here: Lithospermum multiflorum, Geranium caespitosum, Ipomopsis aggregata ssp. collina, and Koeleria macrantha. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation.

Collected by permit: Pike-Isabel National Forest, 2019, issued: Mar 8, 2019, to: Tom Schweich.

Tom Schweich 2176. 23-Jul-2019

Coll. No. 2176, 23 Jul 2019, characters observed: Perennial grass, to 70-80 cm., occasionally obscurely rhizomatous; Roots, fibrous; Stem, herbaceous; Leaves, blade and sheath differentiated, soft, sheath, 90 mm., closed, ligule, membraneous, 1 mm., auricles, minimal, blade, 90 mm. × 3 mm. wide, flat, scabrous, margins, scabrous; Inflorescence, 1 per culm, >leaves, panicle, 130 mm. × 30 mm. wide; Rachis, not extended, scabrous; Spikelet, many, 26 mm. × 5 mm. wide, similar, 1 per node, pedicels 16-30 mm.; Compression, lateral; Disarticulation, above the glumes, between florets; Glumes, lower, 6 mm., veins, ≥3, back hairy, upper, 8.5 mm., <lowest floret, veins, ≥3, rounded, membraneous, awns, 0, back hairy, somewhat more dense distally; Florets, 6 per spikelet, bisexual; Lemma, 10 mm., >glumes, lanceolate, rolled, uniformly hairy on back, green, veins, #7, convergent, tip, rounded, awns, #1, 1.5 mm., straight, attached back of lemma, near tip; Palea, 8 mm., <lemma, membraneous, back hairy, keel ciliate, veins, green, margin, glabrous, tip, entire; Anthers, 2.3 mm.; Ovary, glabrous; Stigma, feathery; Achene, 3 mm., green.

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Date and time this page was prepared: 8/2/2020 9:37:53 AM