Scandent shrub to 3m with recurved prickles, densely prickly branches. Paripinnate bipinnate glabrous or puberulent leaves to 200mm long, 4-8 pairs of glabrate leaflets to 35mm x 20mm, spiny petioles & rachis. Tomentose axillary or terminal many-flowered racemes to 70mm long with bracts to 8mm long, calyx to 8mm long, petals yellow to 8mm long. Sparsely spiny puberulent black legume 80mm x 55mm, with beak to 10mm long, rusty tomentum on branches