Tree, 12-27 m by 18-120 cm. Branchlets 2-4 mm thick, glabrous. Leaves 2-3-jugate, glabrous. Pith of the petioles with 1-5 vascular strands. Leaflets ovate to lanceolate, 31½-13 by 1¼-51½ cm, chartaceous; base cuneate; apex more or less abruptly, bluntly acuminate; nerves 7-10 pairs (angle 45-70°), slender, straight to faintly curved, vaguely arching; intermediate veins often well developed. Inflorescences axillary, glabrous, ♂ ones broadly paniculate, 6-18 cm, without or with a short peduncle, the branches up to 11 cm long; female inflorescences 3-6 cm long, branched from the base. Flowers glabrous, ♂ ones 2-2.5 mm, 9 3-3.5 mm long. Calyx 1 mm. Stamens in ♂ flowers free or the epipetalous ones slightly confluent with the petals, in female flowers all adnate with the disk halfway up. Disk small, annular. Infructescences and fruits unknown.