Annual herbaceous tendril climber with glabrous stems, young growth puberulous. Leaves to 135mm x 125mm with 5 puberulous lobes. 3mm diameter white or pale yellow flowers, male flowers with lobes to 2.5mm long, female flowers with 4 lobed corolla to 2mm long. Beaked green 5-angled fruit to 13mm x 4.5mm.