Liana with glabrous to glabrescent branches. Trifoliolate leaves, terminal leaflet to 125mm x 53mm, lateral leaflets to 126mm x 53mm, glabrous above & glabrescent beneath. Cauliflorous inflorescence with paired bracts to 5mm x 1.5mm, fleshy 4-lobed calyx with tube to 7mm, upper lobes to 3mm x 7mm, lateral lobes 3mm x 5mm, lower lobes 6mm x 5mm. Glabrous petals, claws to 7mm, white standard with wine-coloured lines & yellowish spot to 15mm x 14mm, white wings to 15mm x 10mm, white keel petals to 9mm x 10mm. Glabrescent fruit to 95mm x 39mm x 20mm with 2 wings 3mm wide.