Liane or climber with cylindric hollow glabrous finely striate stems. Leaves (3) 5-foliolate or very occasionally simple and 5-lobed; petiole up to 13 cm. long, glabrous, finely striate; leaflets subsessile (or petiolule of terminal leaflet up to c. 5 mm. long); leaflet-lamina up to 22 × 11 cm., membranous, the lateral ones somewhat smaller than the terminal one, terminal leaflet narrowly obovate, lateral ones elliptic with the basal pair often asymmetric, apices acuminate, margins strongly serrate or serrate-crenate, bases cuneate, glabrous on both sides, paler below. Inflorescence of rather lax much-branched paniculate cymes; peduncle up to 11 cm. long, glabrous, tendril branching from peduncle c. 1·5 cm. below the base of the inflorescence-rhachis; rhachis and all branches of inflorescence puberulous; pedicels up to 2 mm. long, puberulous. Calyx 1 mm. in diam., salver-shaped, glabrous, entire or undulate. Petals wine-coloured (or cream), 1 mm. long, oblong, glabrous. Stamens shorter than the corolla lobes with wine-coloured filaments and yellow anthers. Disk wine-coloured, cupular and almost hiding the pentagonal ovary. Fruit c. 1 cm. long, ellipsoid. Seeds dark brown, up to 9 × 4 mm., oblong-ellipsoid.