Scandent shrub. Main root tuberous. Cladodes triangular in cross section, with marginal ridges, narrower than 1 mm. Stamens with yellow anthers. Flowers white with a reddish central streak.
Scandent perennial, with long, thin, puberulous stems, clambering over surrounding shrubs, with the branches short, spreading. Rhizome compact, with numerous swollen roots placed close together, spreading; each swelling ±0.2 m long, attenuate at both ends. Stems thin, supple, minutely white puberulous, up to ±3 m long, 5 mm in diameter at base. Spines thin, exserted, ±4 mm long. Branches exserted, placed close together, short, up to 0.1 m long. Cladodes in fascicles of 10-20, subtended by a short spine, 3-angled, thin, ±10-15 mm long, curved, apiculate. Racemes separate, from same node as branches but longer; flowers laxly dispersed on short and longer persistent stalks, occasionally in clusters of 2 or 3; perianth (faded) ±4 mm long. Stamens with yellow anthers. Gynoecium obovoid, probably with 4 ovules in each locule. Berries globose, much wrinkled in dry state, ±5 mm in diameter, yellow.