Plant: Annual, 1-4 dm, hairy Leaves: palmately compound, generally cauline; petiole 1-7 cm; leaflets 5-7, 10-40 mm, 1-5 mm wide, sometimes linear, upper surface generally (sub)glabrous INFLORESCENCE: raceme, 1-8 cm; whorls (0) generally 5; peduncle 3-10 cm; bracts 4-6 mm, deciduous; pedicels 1-3.5 mm Flowers: 4-10 mm; calyx 2-lipped, upper lip 2-4 mm, deeply lobed, lower lip 4-6 mm; petals generally blue (rarely light blue, pink, or white), banner spot white, becoming magenta, keel whitish, generally pointed, upper keel margins generally ciliate near tip; stamens 10, filaments fused, 5 long with short anthers, 5 short with long anthers; style brushy Fruit: legumes, 1-3 cm, 3-6 mm wide, hairy, dehiscent, generally oblong; Seeds 5-8, often ± reniform, generally hard, smooth Misc: Open or disturbed areas; < 1600 m.