Scandent vine with quadrangular glabrous stems to 6m. Coriaceous glabrous leaves to 120mm x 35mm. 3-5 flowered inflorescence, calyx to 15mm long, glabrous green or tinged purple with teeth to 8mm long, dark maroon hispid corolla with tube to 12mm long, upper lip to 10mm long & lower lip to 3mm long. Dark purple fleshy nutlets to 4mm long.