Large annual herbaceous tendril vine to 1.2m with angled pubescent stems with 4-5 parted tendrils. 3-lobed pubescent toothed leaves to 100mm long. Axilliary, night-blooming 20mm white flowers, 80mm across, staminate inflorescence to 200mm long, puberulent calyx 17mm long with lobes 18mm long, corolla to 25mm long. Pistillate inflorescence to 10mm long. Fleshy fruit green to pale yellow with yellow-green lines, pubescent, 75mm x 40mm.