Russian thistle
1 species
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Salsola tragusRussian thistle, tumbleweed
Distribution: Occurring chiefly east of the Cascades crest in Washington, where widely distributed; southern British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Roadside, meadows, fields, wastelots, and other disturbed open areas from low to middle elevations.
Origin: Introduced from Eurasia
Flowers: June-August
Growth Duration: annual