Page author: David Giblin
Achnatherum occidentale
western needlegrass

Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.

Habitat: Grassland, sagebrush desert, and coniferous forests from low to middle elevations.

Flowers: May-July

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


[none provided]

Accepted Name:
Achnatherum occidentale (Thurb. ex S. Watson) Barkworth
Publication: (Piper) Barkworth, Phytologia 74: 10. 1993.

Synonyms & Misapplications:
Eriocoma occidentalis (Thurb. ex S.Watson) Romasch.
Stipa occidentalis Thurb. ex S. Watson [HC]
Additional Resources:

PNW Herbaria: Specimen records of Achnatherum occidentale in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Achnatherum occidentale checklist entry

OregonFlora: Achnatherum occidentale information

E-Flora BC: Achnatherum occidentale atlas page

CalPhotos: Achnatherum occidentale photos

15 photographs:
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