Erect, much-branched shrub, 0.4-0.6(-1.0 m) high. Branches shortly white-villous when young. Leaflets linear-oblong, 1.0-2.5 mm long, green, glabrous, obtuse or subacute. Inflorescences solitary flowers dispersed along branchlet ends, branchlet tips with solitary or paired flowers. Flowers small. Calyx white-tomentose; lobes triangular, acute, ± 1.5 mm long. Petals pale yellow. Pod triangular-lanceolate, dark brown to black.