Tripidium
1 species
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Tripidium ravennaeravennagrass
Distribution: Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to adjacent Oregon, also in Boise, Idaho; California and sporadically eastward to the Atlantic Coast.
Habitat: Roadsides, fields, and other disturbed, open areas.
Origin: Introduced from Eurasia
Flowers: July-September
Growth Duration: Perennial