Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and other disturbed areas.
Flowers: June-October
Origin: Introduced from Eurasia
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Wind
Annual, the culms erect to decumbent, up to 1 m. tall.
Sheaths open; ligules nearly 2 mm. long; blades flat, mostly glabrous, 4-8 mm. broad.
Inflorescence a cylindric, congested panicle up to 10 cm. long; spikelets articulate below the glumes, 2-flowered, each subtended by 2-3 bristles; the upper, fertile lemma and palea enclosed by the second glume and lower, sterile lemma.
Utricle
Publication: Ess. Agrostogr. 51, 171, 178. 1812.
Panicum viride L.
Setaria viridis (L.) P. Beauv. var. breviseta (Döll) Hitchc.
Setaria viridis (L.) P. Beauv. var. weinmannii (Roem. & Schult.) Borbás
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var. viridis – green bristlegrass, green foxtail
Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
PNW Herbaria: Specimen records of Setaria viridis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Setaria viridis checklist entry
OregonFlora: Setaria viridis information
E-Flora BC: Setaria viridis atlas page
CalPhotos: Setaria viridis photos
