Large climbing shrub. Twigs minutely fulvous-pubescent. Leaves 3-8-jugate, glabrous or minutely pubescent; lateral petiolules 1.5-2 mm long. Leaflets lanceolate, lateral ones with nearly parallel margins, terminal ones often broadened towards the centre, 1½-7½ by ¾-3 cm, thin-chartaceous, glabrous or beneath pubescent on the midrib and with a few scattered hairs on the nerves; base rounded (rarely narrowed), slightly oblique in lateral leaflets; apex gradually acuminate, acumen short to rather long, blunt; nerves 6-10 pairs, nearly transverse, straight, distinctly looped and joined. Inflorescences axillary, in fascicles of 4-5 panicles, the central one slightly longer, up to 7 cm long, rather many-flowered, glabrous to rather densely ferruginous-pilose. Calyx 2-3 mm high, thinly tomentose outside. Corolla 31h-5 mm long. Pistils extremely small, ½-1 mm high, possibly sterile! Fruits (sec. Schellenberg) strongly curved, 1½ cm long.