Tuberous perennial climber or trailer with glabrous stems to 4m. 3-5 lobed leaves to 75mm x 120mm, upper surface white-pustulate, glabrous or hairy beneath, denticulate margins, may have bract to 1.5mm, simple tendrils. 1-2 male flowers, calyx lobe to 4mm, greenish-white to orange corolla to 12mm long, lobes to 7mm, 1-2 female flowers. Glabrous green fruit with white spots maturing orange-red to 25mm x 25mm