1 species
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Isatis tinctoriaDyer's woad
Distribution: Known only from scattered locations in central Washington; British Columbia south to California, east to the Rocky Mountains; also occurring in parts of central and eastern North America.
Habitat: Disturbed dry ground, pastures, and roadsides, where often escaped from cultivation.
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: annual, biennial, perennial