Distribution: Occurring west of the Cascades crest in lowland western Washington; British Columbia to Washington, east across southern Canada to central and eastern North America.
Habitat: Fields, roadsides, gardens, wastelots, and other disturbed areas at low elevations.
Origin: Introduced from Central and South America
Conservation Status: Not of concern
Freely branching annual, 2-7 dm. tall, the stem spreading-hairy.
Leaves opposite, simple, coarsely toothed, ovate or lance-ovate, petiolate, 2-7 cm. long and 1-4 cm. wide.
Heads numerous in leafy cymes, the disk 3-6 mm. wide; rays few, white, short and broad, pistillate and fertile, with pappus scales equaling the tube; pappus scales of disk flowers tapering to awn tips; involucre bracts few and broad, joined at the base, each subtending a ray; receptacle conic, chaffy throughout.