Hairy Brome - Bromus commutatus
Meadow Brome, Hairy Chess
Annuals, culms 40-120 cm, erect or ascending. Lower sheaths densely stiff-hairy (hairs often retorse); upper sheaths pubescent or glabrous; ligules 1-2.5 mm, glabrous or pilose, obtuse, ciliolate; blades 9-18 cm long, 2-4 mm wide, pilose on both surfaces. Panicles 7-16 cm long, 3-6 cm wide, open, erect to ascending; branches sometimes longer than the spikelets, slender, erect to spreading. Spikelets 14-18(-30) mm, terete to moderately compressed; florets 4-9(11). Lower glumes 5-7 mm, 5-veined; upper glumes 6-9 mm, 7(9)-veined; lemmas 8-11.5 mm long, backs usually glabrous, distinctly 7(9)-veined, margins scabrous or pubescent, awns 3-10 mm, straight, arising less than 1.5 mm below the leema apex; anthers 0.7-1.7 mm. Caryopsis equal to or shorter than the paleas (adapted from: Pavlick & Anderton, 2007, in Flora N. America, Vol. 24).
Native to Europe and the Baltic region; now widespread across North America (Pavlick & Anderton, 2007, in Flora North America, Vol. 24).
Observations in Montana Natural Heritage Program Database
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- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.