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Montana Field Guide

Montana Field Guides

Oregon Bentgrass - Agrostis oregonensis

Status Under Review
Native Species

Global Rank: G5
State Rank: SU
C-value: 6

Agency Status


External Links

General Description
Perennial bunchgrass. Stems 30–50 cm. Leaves: blades mostly basal, 2–4 mm wide, ligules 1–6 mm long. Inflorescence an open panicle 6–12 cm long. Spikelets 2.5–3 mm long. Lemmas 2.5–3 mm long, awnless; palea absent to minute (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Southern BC to CA and NV, east to western MT and northwest WY.

Observations in Montana Natural Heritage Program Database
Number of Observations: 9

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


  • 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.
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Citation for data on this website:
Oregon Bentgrass — Agrostis oregonensis.  Montana Field Guide.  .  Retrieved on , from