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Montana Field Guide

Montana Field Guides

Mountain Hairgrass - Vahlodea atropurpurea
Other Names:  Deschampsia atropurpurea


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

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General Description
Cool season, perennial bunchgrass Stems few-bunched, 20–60 cm. Leaves: blades 4–6 mm wide, flat and ascending; sheaths with overlapping margins; ligule membranous. Inflorescence a contracted to open panicle, drooping to erect, 4–8 cm long. Spikelets ovoid, 2-flowered, 5.5–6 mm long; glumes enveloping the florets, distal portion purplish. Lemmas 2 per spikelet, awned from near the middle; rachilla hairs long; palea enclosed in floret. Disarticulation above the glumes; unit of dispersal the floret (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout most of Canada and the Pacific Northwest region of the U.S. (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

References
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Citation for data on this website:
Mountain Hairgrass — Vahlodea atropurpurea.  Montana Field Guide.  .  Retrieved on , from