Distribution: Introduced in scattered locations in the Pacific Northwest, mostly west of the Cascades.
Habitat: Weed of disturbed ground.
Flowers: July - September
Conservation Status: Not of concern
Pubescent annual, the stiff stems 3-6 dm. tall.
Leaves alternate, petiolate, narrowly triangular in outline, two or three times pinnate, the ultimate segments narrowly lanceolate.
Inflorescence of compound umbels, with few to several rays; involucre bracts 0-1; flowers white, the 5 petals somewhat unequal, styles 2.
Fruit ovoid, with straight bristles along the ribs.