Tree, (1½-)15-20 m high. Branchlets 1-5 mm diam., glabrous. Leaves (1-)2-4-jugate, (sub)-glabrous. Pith of the petioles with 1(-2) vascular strands. Leaflets obovate to oblanceolate or lanceolate, (1-)2-6 by (0.5-)1-2.5 cm, rigid, glabrous except sometimes a few hairs on the lower side of the midrib; base rounded to broadly cuneate; apex gradually narrowed into a rather long, blunt acumen; nerves very slender, 6-10 pairs (angle 60-70°), straight, curved near the margin, not arching; reticulations very minute and dense. Inflorescences axillary, rarely together pseudo-terminal, paniculate or subracemose, branched from the base, glabrous, ♂ ones 1-2 cm, female ones up to 5 cm. Flowers glabrous, c. 2.5 mm. Calyx 1 mm. Stamens free. Disk in ♂ flowers more or less undulate, in female ones truncate. Fruits ovoid to ellipsoid, 7-9 by 5-6 mm.
Mountain forests at 850-1400 m. Fl. Aug., Nov., March, fr.--10.
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