Tuberous climber with glabrous stems sometimes prickly, trifoliolate glabrous leaves 120mm x 40mm or simple leaves 80mm x 40mm, inflorescence sometimes prickly raceme, yellow to bright green, tepals white to brownish, male inflorescence to 500mm long, axillary, female inflorescence to 300mm long, axillary, capsules 29mm x 15mm, wings 70-90ยบ 6mm x 25mm