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Montana Field Guide

Montana Field Guides

Porter's Brome - Bromus porteri
Other Names:  Bromus anomalus [misapplied]

Native Species

Global Rank: G5
State Rank: S4?
C-value: 5


Agency Status
USFWS:
USFS:
BLM:


 

External Links






 
General Description
Perennial bunchgrass. Stems 30–90 cm. Leaves: blades 3–5 mm wide. Inflorescence an open panicle 6–10 cm long. Spikelets 15–20 mm long, with 5 to 11 florets. Lemmas hairy with an awn (1)2–3 mm long (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
Throughout much of the western one-half of North America (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 150

(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)



Habitat
Open to closed montane understory, sometimes at edges of forested sites (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Clark, D. 1991. The effect of fire on Yellowstone ecosystem seed banks. M.Sc. Thesis. Montana State University, Bozeman. 115 pp.
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Pallister, G.L. 1974. The seasonal distribution and range use of bighorn sheep in the Beartooth Mountains, with special reference to the West Rosebud and Stillwater herds. M.Sc. Thesis. Bozeman, MT: Montana State University. 67 p.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
    • Wood, M.A. 1981. Small mammal communities after two recent fires in Yellowstone National Park. M.Sc. Thesis. Bozeman, Montana: Montana State University. 58 p.
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Citation for data on this website:
Porter's Brome — Bromus porteri.  Montana Field Guide.  .  Retrieved on , from