Plant: Annual, ± glabrous; stem spreading or erect, 1-6 dm Leaves: odd-1-pinnate; leaflets 1-2.5 cm, oblanceolate to wedge-shaped-obovate, generally sharply dentate INFLORESCENCE: raceme, slender, compact, many-flowered; axis generally 1-2 cm when flowers open Flowers: calyx 1-1.5 mm, lobes ± equal; corolla 2.5-3 mm, yellow; 9 filaments fused, 1 free Fruit: legume, indehiscent, 2-3 mm, ovoid, bumpy or with obscure lines; seed 1 Misc: Open, disturbed areas; < 1500 m.; Apr-Oct