Spreading or decumbent shrub, 45.0 to 80.0 cm in height at matruity; the branches glabrous to pubescent, with spines usually somewhat hooked, but some may be straight; leaves 5.0 to 10.0 cm in length, the rachis prickly and with 4 to 8 pairs of pinnae, leaflets 8 to 15 pairs per pinna and 4.0 to 6.0 mm long; flowers white to pink, borne in globose axillary heads; fruits (legumes) linear, flat, not strongly constricted between the seeds, 2.0 to 3.5 cm in length, the margins entire or prickly; the leaves, flowers and fruits ranging from glabrous to pubescent.