Distribution: Occurring chiefly east of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California, east across most of North America to the Atlantic Coast.
Habitat: Roadsides, fields, ditches, meadows, grassy slopes, wastelots, and other disturbed, open areas at low to middle elevations.
Origin: Introduced from Europe
Growth Duration: Annual
Conservation Status: Not of concern
Annual or biennial, 2-8 dm. tall, thinly white-woolly throughout, the stem winged.
Basal leaves lyrate and pinnatifid, up to 20 cm. long and 5 cm. wide; cauline leaves smaller, becoming linear and entire upward.
Heads several, broader toward the base; involucre 10-15 mm. high, its middle and outer bracts spine-tipped, the larger spines 11-22 mm. long; flowers yellow; pappus of the outer flowers wanting, that of the others 3-5 mm. long; receptacle densely bristly.