Distribution: Introduced as a forage crop in the temperate regions of the world
Habitat: Near cultivated fields, roadsides, often on dry ground
Flowers: June - October
Conservation Status: Not of concern
Usually glabrous perennial from a long taproot, the stems more or less erect, 3-10 dm. tall.
Leaves trifoliate, the leaflets elliptic-oblanceolate, finely dentate on the outer end, 2-4 cm. long. stipules entire.
Inflorescence of dense racemes on peduncles 1-3 cm, long arising in the leaf axils; flowers 20-100, usually bluish-purple, but often whitish, yellow, or even pink; calyx 5-toothed, nearly as long as the corolla; corolla pea-like, 4-5 mm. long, the banner erect, much longer than the wings and keel.
Pod many-seeded, coiled in 2-3 spirals, not armed.