A scandent prickly shrub reaching a height of 4 to 5 meters; branches are gray and armed with short, sharp prickles. Leaves are pinnately compound, 15 to 15 centimeters long, and with 8 to 10 pairs of pinnae; rachis has one gland near the base, and one or two near the apex; leaflets number 20 to 32 pairs on each pinnae, are linear-oblong, being 8 to 10 millimeters in length, and have a pointed tip and subtruncate base; midrib is oblique. Panicles are terminal, in the upper axils, and ample. The heads are yellow about 1 centimeter in diameter. Pods are straight, somewhat fleshy, flat, 7 to 10 centimeters long, and about 2 centimeters wide. |