Eastern Mojave Vegetation Coll. No. 1930.2, Alopecurus geniculatus  


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  Poaceae Alopecurus geniculatus
Photographed 11 December 2018.

Coll. No. 1930.2, 8 Jun 2018, characters observed: Perennial grass, clumped, 45-50 cm.; Roots, fibrous; Leaves, sheath and blade differentiated; Sheath, 40-55 mm., open, loose or inflated; Ligule, membranous, 2.5-7.0 mm., auricles, 0; Blade, 65-75 mm. × 2.2 mm. wide, flat, glabrous; Inflorescence, 1 per culm, >leaves, panicle tightly contracted, 50 mm. × 6 mm. wide, branched ≥ 2×, spikelets, many; Rachis, not extended, glabrous; Spikelets, many, similar, borne singly, 1-flowered, 3 mm. × 1.3 mm. wide, look like little horseshoe crabs; Compression, lateral; Disarticulation, below the glumes; Glumes, lower, 2.8 mm., upper, 2.7 mm., keeled, membranous, awns, 0, hairy on keel and lateral vein; Florets, 1 per spikelet, bisexual; Lemma, 2.7 mm., membranous, glabrous, awns, #1, 5 mm., gently curved not sharply bent, attached proximal ⅓; Palea, absent; By dimensions of glumes, lemmas, and lemma awns, this would be A. geniculatus, but very few awns geniculate.

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Date and time this page was prepared: 9/21/2022 1:02:47 PM