Scandent shrub or liana. Leaves: petiole and main rachis up to c. 20 cm long, puberulous; pinnae c. 10 pairs, petiole and rachis, 4-6 cm long, puberulous. Leaflets 10-14 pairs per pinna, oblong, c. 10 by 3 mm, entire, glabrous, nerves and veins invisible. Inflorescences 25 cm long, rachis and branchlets pubescent, densely flowered; pedicels 2-3 mm, sparsely puberulous. Flowers seen rather young. Hypanthium c. 1 mm high, sparsely puberulous. Calyx lobes oblong, 2.5-3 by 0.75-1 mm, glabrous except slightly ciliate on the margins. Petals all similar, oblong, c. 2.3 by 0.3 mm, glabrous. Stamens: filaments 0.6-1.5 mm; anthers c. 1 mm long. Ovary sessile, c. 1 mm long, glabrous, 2-ovuled; style c. 1.5 mm, glabrous. Pods not stipitate; seed-bearing part suborbicular or broadly ellipsoid, 1.4-1.6 by 1.2-1.4 cm, glabrous, obscurely reticulate; wing 4.5-5.5 by c. 1.5 cm, the basal part gradually narrowed along one lateral side of the seed-bearing part towards its base. Seeds c. 9 by 8 mm.