Distribution: Native of Eurasia, naturalized in eastern United States, rare in the Pacific Northwest.
Habitat: Fields and waste places.
Flowers: August - October
Conservation Status: Not of concern
Sweet-scented, glabrous, tap-rooted annual 0.3-3 m. tall.
Leaves 2-10 cm. long, twice or thrice pinnatifid, the ultimate segments linear or lanceolate.
Inflorescence broad and open, the discoid heads loose, often nodding, borne on short peduncles; involucre glabrous, imbricate, 1-2 mm. high; flowers all fertile, the outer pistillate; pappus none,