Large liane. Trifoliolate leaves, glabrous leaflets to 80mm x 38mm. Inflorescence to 200mm long, green calyx to 23mm long, tube to 10mm long, teeth to 3mm, deep purple petals, standard petals 65mm long, wings 50mm long, keel 55mm long. Brown glabrous pod to 135mm x 38mm with ribs.