Plant: Annual, 1.5-5 dm, taprooted, ± hairy; stem spreading or erect, branched Leaves: petiole generally 2-10 cm; blade 2-10 cm, 1-5 cm wide, oblong to ovate, pinnately dissected; segments 1.5 mm, linear INFLORESCENCE: compound umbel; peduncle 1-6 cm; bractlets 2-5, 5-10 mm, linear-lanceolate to obovate, ciliate; rays 1-3, generally 1-2(5) cm, ascending; pedicels 2-3 mm, stout Flowers: many, small, slightly bilateral; calyx lobes generally 0; petals white, slightly notched, narrowed at tips, outer > others; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a ± conic, persistent projection or platform on top subtending 2 free styles Fruit: bristly; body linear to oblong, 6-15 mm, 1-2 mm wide, slightly compressed side-to-side; beak > body, 2-7 cm, sterile, very compressed front-to-back; ribs thread-like, low, wide, rounded; oil tubes inconspicuous; fruit axis entire or divided at tip; Seed: face grooved Misc: Grassy slopes, roadsides; 15-1000 m.