Erect tree, 13-17 in tall, branches armed with prickles. 3-6 mm long, which fall off after the third year. Leaf sometimes armed, trifoliolate, petiole 10-20 cm long, leaflets 7.5-15 cm long and broad, the terminal rhomboid ovate, the lateral obliquely deltoid, glabrous above, densely pubescent below; stipels glanduliform; stipules linear-lanceolate, caducous. Racemes 14, near the tip of branches, 5-10 cm long, peduncle short. Flowers in fascicles of 1-3. Pedicel 12-13 mm long; bracts caducous, bracteoles minute. Calyx 6-10 mm long, pubescent, becoming bilabiate. Corolla scarlet. Vexillum 3.7-5.0 cm long, 12-16 mm broad. Fruit stipitate, 12.5-15.0 cm long, torulose, 2-5-seeded.