Liana or glabrous scandent shrub. Leaves to 150mm x 80mm, glabrous or sparsely hairy benneath. Axillary racemes with bracteoles, up to 15 flowers. Perfumed white flowers with yellow blotch on keel, calyx to 4mm x 5mm with lobes to 1mm, corolla to 12mm x 12mm, standard petals to 14mm x 13mm with claw to 2mm, wing to 14mm x 5.5mm with claw to 3mm, keel petals to 14mm x 5mm with claw to 2mm. Red or yellow glabrous inflated pod to 40mm x 15mm.