View in other NatureServe Network Field Guides
NatureServe
Montana
Utah
Wyoming
Idaho
Wisconsin
British Columbia
South Carolina
Yukon
California
New York
Hairy Brome - Bromus commutatus
Other Names:
Meadow Brome, Hairy Chess
General Description
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).
Species Range
Montana Range
Range Descriptions
Non-native
Range Comments
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
Number of Observations: 47
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Management
Stewardship Responsibility
References
- Additional ReferencesLegend:
View Online Publication
Do you know of a citation we're missing?
Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
- Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
- Web Search Engines for Articles on "Hairy Brome"
