Erect annual, 10-50 cm tall, sparingly pubescent to glabrous. Leaflets 1-3 cm long, 5-15 mm broad, obovate to oblanceolate, dentate or incised; stipules lanceolate, acuminate, entire. Flowers 1-2 in leaf axils. Calyx 7-8 mm long, teeth as long as the tube. Corolla yellowish white, sometimes tinged with lilac, 12-18 mm long. Fruit 5-11 mm long, 3-5 mm broad, glabrous or pubescent, tapering into a beak, 1-3.5 cm long, lengthwise reticulately nerved, 10-20-seeded.