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Montana Field Guide

Montana Field Guides

Thickspike Wheatgrass - Elymus lanceolatus
Other Names:  Agropyron dasystachyum


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

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General Description
Rhizomatous. Stems usually glaucous, 35–80 cm. Leaves: blades 2–5 mm wide, often stiff and somewhat inrolled, leaf sheaths and collar often hairy. Inflorescence 3–15 cm long, rachis continuous, internodes <10 mm long. Spikelets 10–29 mm long, appressed to the main rachis, florets mostly 4 to 9, glumes shorter than florets, broadest above the base and shortly tapering to an acute tip. Lemmas sparsely to densely hairy, awn-tipped or with an awn up to 5 (–10) mm (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout the western half of N. America and eastward in southern Canada (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 87

(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:
Thickspike Wheatgrass — Elymus lanceolatus.  Montana Field Guide.  .  Retrieved on , from