Distribution: Widespread in eastern United States; occasionally introduced in the Pacific Northwest.
Habitat: Fields, woodlands and waste places.
Flowers: July - September
Origin: Introduced from eastern North America
Conservation Status: Not of concern
Annual or biennial, 3-25 dm. tall, usually glabrous and often glaucous, the juice milky.
Basal and lower cauline leaves 10-35 cm. long and 1.5-12 cm. wide, entire to pinnately lobed.
Heads numerous, 13-22 flowered, the flowers yellow, all ligulate; involucre 10-15 mm. high, cylindric but broadening at the base, the bracts imbricate; pappus bristles 5-7 mm. long, white.
Achenes blackish, very flat, with a median nerve on each face, 4.5-6.5 mm. long including the slender beak, which may be as long as the body.