Scandent glabrous climber, 6-ridged stems. 3-foliolate leaves, terminal leaflet to 9mm long, lateral leaflets to 65mm x 28mm. Greenish white flowers in few-flowered inflorescences with bracts to 1mm long, flowers to 12mm long, 5 sepals, 2 external sepals to 4mm x 3.5mm, 3 internal sepals 8.5mm x 5mm, petals to 10mm long with lobes to 3.5mm long. Capsule to 45mm x 43mm.