Branchlets smooth to slightly rough, reddish black to brownish black; flowering twigs c. 4 mm thick. Leaves 1-4-jugate; petiole 6.5-8 cm long, terete, very slender, ribbed, glabrous; rachis 12-16 cm long, terete, very slender, ribbed, glabrous; petiolules 1-1.8 cm long, flattened, glabrous, pulvinus 3-8 mm long, distinctly grooved, glabrous. Leaflets opposite, usually ovate, sometimes elliptic, 10-15 by 4.5-6.8 cm, index 2.1-3.5, papery to thin pergamentaceous, both sides glabrous; base symmetric, attenuate; margin not recurved; apex abruptly narrowing, caudate; midrib prominent, distally flattened, slightly ribbed to smooth, lateral nerves 0.9-1.8 cm apart, marginally looped, intercalated veins curved towards the base, veins densely reticulate, on upper surface slightly raised. Inflorescences subterminal, not branching at the base; bracts, bracteoles, pedicels and flowers not observed. Fruits obcordate, c. 1.5 by c. 1.2 cm, outside rugose, laxly puberulous, inside densely papillose; stipe c. 3 mm high; lobes 3, well developed, 0.8-1.5 by 0.5-0.8 cm; style c. 1 mm long. Seeds c. 1.2 cm long; hilum c. 2 mm diam:, pseudohilum c. 3 mm diam.
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