Erect or clambering glabrous spiny shrub to 2m with 4-5 angled stems with recurved thorns. Bipinnate glabrous or puberulent leaves to 120mm x 1.5, 10-20 pairs of leaflets to 6mm long. Axillary heads to 8mm diameter, minute calyx, pink or yellow glabrous corolla 3mm long, lobes to 6mm long. Spiny pilose beaked legume with 4-5 longitudinal ribs 180mm long x 6.5mm.