Herbaceous deciduous twining vine with 6-angular striate glabrous stems. Glabrous leaves to 30mm x 10mm. Terminal & axillary panicles or cymes with bracteoles of yellowish-white flowers, flowerheads with 3-10 flowers, corolla to 3.5mm long. Brown or cream 5-ribbed glabrous achenes to 2.2mm long.