Left twining semi-woody tuberous climber with rhizome to 35mm x 10mm, glabrous stems becoming ridged & grooved with age, glabrous leaves to 50mm x 115mm, male axillary racemes to 200mm long, 3.5mm purple flowers with bracts to 1.5mm x 0.5mm, flowers with 6 purple tepals, inner tepals 3mm x 2mm, outer tepals slightly longer & narrower, female axillary racemes to 700mm long, flowers with bracts to 1.6mm long,tube 1mm long & 6 tepals 3mm x 2mm, 3 locular fruit capsule to 28mm long