Sinapis
mustard
2 species
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Sinapis albawhite mustard
Distribution: Occurring east of the Cascades crest in eastern Washington; Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Fields, roadsides, wastelots, and other disturbed areas.
Origin: Introduced from the Mediterranean region
Flowers: May-June
Growth Duration: Annual
Sinapis arvensischarlock, corn mustard, wild mustard
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Waste places and other disturbed areas.
Origin: Introduced from the Mediterranean region, reaching North America perhaps as early as 8000 years bp (Jacobson et al. 1988)
Flowers: May-June
Growth Duration: Annual