Sometimes climbing glabrous subshrub with 5-ridged stems. 3-foliiolate leaves, terminal leaflet to 13mm long, lateral leaflets to 118mm x 69mm. Racemes or thyrses 160mm long with 2 tendrils, 3-7 flowered with bracts to 1mm long, flowers to 4.25mm long, 5 sepals, 2 external sepals to 2.25mm x 2.5mm, 3 internal sepals to 3mm x 2.4mm, petals to 6mm long. Inflated capsule to 45mm x 27mm.