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Montana Field Guide

Montana Field Guides

Purple Oat - Schizachne purpurascens

Status Under Review

Global Rank: G5
State Rank: SU

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

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General Description
Cool season, perennial bunchgrass. Stems loosely bunched and connected by short rhizomes, 30–80 cm. Leaves: blades 2–5 mm wide, often flat and lax; ligule 1-1.5 mm long; sheaths with fused margins. Inflorescence an open panicle 7–13 cm long, branches in pairs or single, drooping, bearing 1 or 2 spikelets. Spikelets 11–16 mm long, with 4 to 5 florets; glumes with mostly 3 to 5 faint veins. Lemmas 8–12 mm long with 7 prominent veins and hairs on callus about one-quarter the length of lemma, awned from between two apical teeth, the awn 9–15 mm long; palea enclosed in floret. Disarticulation above 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 the Rocky Mountain region and the northern latitudes 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: 26

(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:
Purple Oat — Schizachne purpurascens.  Montana Field Guide.  .  Retrieved on , from