Annual herb. Leaves shortly petiolate; leaflets 2-3 pairs, obovate to oblong, 3-8 x 2-4 mm, obtuse or emarginate. Flowers creamy to pale yellow, about 5 mm long, 1-4 in peduncled, capitate, axillary racemes. Pods straight or arcuate, pubescent to glabrescent, 15-30 x 2-4 mm; horseshoe-shaped sinuses in line, with projecting sinus-edges.