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Montana Field Guide

Montana Field Guides

Porter's Brome - Bromus porteri
Other Names:  Bromus anomalus


Global Rank: G5
State Rank: S4?

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 7

(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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Porter's Brome — Bromus porteri.  Montana Field Guide.  .  Retrieved on , from