Eastern Mojave Vegetation Coll. No. 825, Bromus tectorum  
 

 

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  Poaceae Bromus tectorum
Scanned 16 Jun 2013.

I had keyed this out at B. carinatus, but it has since been annotated as B. tectorum.

Coll. No. 825, 30 May 2012, characters observed while keying: Perennial, to 40 cm.; Roots fibrous; Stem herbaceous; Internodes hollow; Leaf blade and sheath differentiated; Sheath closed; Ligule membraneous, 2 mm.; Blade flat, to 4 mm wide, short hairy, margin sparse wavy hairy; Inflorescence 3-many, 10-12 cm., panicle, branching evident, longest branch 25 mm., > leaves, spikelets many; Compression lateral; Spikelets similar, 1 / node, 1 and 2 branches, length 30-35 mm., 5-6 florets; Florets 2+ bisexual; Glumes lower 7 mm., upper 10 mm., margins thin translucent, upper glume has 3 prominent veins (keeled), awns 0; Lemma, lower 12 mm., keeled, veins = 3 or 7, outer 2 appear doubled, tip 2-forked, awns 1, 13 mm, straight, attached to back at 9 mm.; Palea, 8 mm, < lemma, keel hairy, margin ciliate; Anthers 3, 0.7 mm., brown; Ovary 5 mm., glabrous below, hairy near tip.

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Date and time this page was prepared: 7/13/2018 5:39:01 PM