Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska south to northwest Oregon, east across the northern half of North America to the Atlantic Coast; circumboreal.
Habitat: Moist places in thickets and open woods.
Conservation Status: Not of concern
Perennial from a short rhizome, the stem 4-12 dm. tall, glabrous below, becoming stellate-puberulent above, without long, spreading hairs, and with milky juice.
Leaves alternate, the basal and lower cauline small and soon deciduous, the others, except for the reduced upper ones, nearly alike in size and shape; leaves sessile but not clasping, up to 10 cm. long and 2 cm. wide, with a few coarse, irregular teeth, and short, stiff hairs on the margins.
Heads several in an open inflorescence, 40- to 110-flowered; involucre 6-13 mm. high, its bracts imbricate, glabrous; corollas ligulate, yellow.