Large woody glabrous twining vine to 10m. Older branches with thick corky ridged bark. Leaves to 240mm x 180mm. Fascicles of glabrous flowers yellowish with reddish-brown veins to 50mm long, basal portion 10mm x 7mm, tube to 15mm long, blade to 35mm x 14mm. Glabrous 145mm x 10mm 6-ribbed fruits, spicy odour.