Glandular pubescent perennial. Stipules triangular, incised with 3-7 teeth, 2-5 mm long. Rachis 5-14 cm long, ending in a tendril. Leaflets 10-26, 5-15 mm long, 4-10 mm broad, margin dentate except near the base, pubescent. Inflorescence 1-2-flowered, peduncle ending in a spine, 15-35 mm long. Flower pedicellate, pedicel 5-10 mm long. Calyx 8-16 mm long, glandular pubescent, teeth 5-10 mm long. Corolla bluish violet. Vexillum 18-23 mm long. Pod 20-35 mm long, 9-12 mm broad, glandular pubescent.