Glabrous scandent herbaceous tendril vine with 6-angled branches, wings to 1mm wide, tendrils to 300mm long. 7 foliolate leaves, glabrous leaflets with coarsely serrate margins, leaflets to 90mm x 35mm. Leaf-opposed or subterminal cymes to 120mm long, greenish-white flowers with 4 2mm petals. Fruit 10mm diameter.