Eastern Mojave Vegetation Coll. No. 2362, Bromus secalinus  
 

 

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  Poaceae Bromus secalinus
Photographed 12 December 2020.

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

Bromus secalinus L.  Chess.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.27 km. south of the GNIS location of Golden. 39.7329N, 105.2215W. WGS 1984 Elev. 1824 m. Larger than Bromus japonicus, growing around a pile of rocks. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Symphoricarpos rotundifolius, Senecio integerrimus, and Lupinus argenteus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2362. 20-Jun-2020

Coll. No. 2362, 20 June 2020, characters observed: Annual grass, to 60 cm.; Leaves, sheath, 85 mm., closed 70 mm., glabrous, ligule, membraneous, erose, blade, 100 mm., adaxially hairy; Inflorescence, open panicle; Spikelets, 17 mm. × 5 mm. wide (excl. awns); Glumes, <lowest floret, lower, 5 mm., veins, #5, upper, 7 mm., veins, #7; Disarticulation, between florets; Callus, glabrous; Lemma, 7.5 mm. × 3.5 mm. wide (broad), rolled (not keeled), veins, #7, converging; Awn, 6 mm., straight, attached back, 1.3 mm. fom apex; Fruit, U-shaped.

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Date and time this page was prepared: 9/22/2021 6:11:09 PM