Simple or rarely bifid perennial tendril climber with glabrous stems to 5m. 3-lobed glabrous leaves to 120mm x 110mm sometimes with bracts to 1mm. Male flowers in racemes, calyx lobes to 3mm x 1.8mm, yellow to orange corolla to 15mm with lobes to 2mm, female solitary flowers similar to male. Fruit to 200mm x 10mm.