Eastern Mojave Vegetation Coll. No. 2842, Elymus repens  
 

 

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If you have a question or a comment about this photograph you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address. 		  Poaceae Elymus repens
Photographed 8 November 2022.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Elymus repens (L.) Gould.  Quack Grass.

Golden, Jefferson County, Colorado. Private garden on Garden Street, in well of tree, and other slopes, 1.06 km. north of the GNIS location of Golden. 39.7648°N, 105.2234°W. WGS 1984 Elev. 1759 m. Colorado Noxious Weed List C.

Collected by permit: City of Golden, 2022, issued: Mar 17, 2022, to: Tom Schweich.

Tom Schweich, with Cathy Hansen-Stamp 2842. 4-Jul-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;

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Date and time this page was prepared: 11/3/2024 5:39:57 PM