Herbaceous vine with glabrous stems. Leaves to 90mm x 60mm with denticulate margins, minutely pustulate above, glabrous beneath, simple tendrils. Staminate flowers in racemes of 6-10 flowers, greenish-white calyx to 5mm wide, whilte or cream corolla 6mm diameter with lobes to 3mm long. Axillary solitary pistillate flowers, calyx & corolla as staminate flowers. Greenish fruit to 15mm long, explosively dehiscent.