Distribution: Widely distributed throughout Washington; widely distributed throughout the United States and Canada.
Habitat: Common weed from the lowlands to logged areas in the mountains.
Origin: Introduced from Eurasia
Conservation Status: Not of concern
Stout biennial, 3-15 dm. tall, the stem conspicuously spiny-winged from the bases of the leaves and covered with stiff, blunt hairs.
Leaves pinnatifid, the largest again toothed or lobed; leaves covered with short, pointed hairs above and thinly white-woolly below.
Heads several; involucre 2.5-4 cm. high, all its bracts spine-tipped; flowers all ligulate, purple or rarely white.
Achenes less than 4 mm. long.