A smooth, climbing shrub reaching a length of 10 meters or more. The branches are armed with short, stout, hard, hooked prickles. Leaves are bipinnate and 20 to 30 centimeters long, and the rachis are armed with recurved spines beneath. The pinnae are 6 to 8, and rather distant; leaflets are 4 to 6 on each pinna, leathery, shinning, ovate to elliptic-ovate, 2 to 5 centimeters long, and pointed at the tip. Flowers are yellow, borne in terminal and ample panicles, and about 1 centimeter in diameter. Pod is 4 to 5 centimeters long, 2.5 to 3 centimeters wide, beaked, hard, and indehiscent, and contains a single seed. |