Tree to 20 m high; branchlets and leaf axes pubescent to glabrescent; branchlets lenticellate. Leaves paripinnate; rachis 1–8 cm long; leaflets 1–3 pairs; lamina usually elliptic-oblong or obovate-elliptic, obtuse or acute, 6–14 cm long, 2–7 cm wide, narrow and acute or broad and unequal at base, usually glabrous, thinly coriaceous, finely prominently reticulate; petiolule 3–10 mm long; petiole 2–5.5 cm long, lenticellate. Panicles 10–24 cm long; pedicels 3–5 mm long. Sepals 2–4 mm long, 1–2 mm wide, coriaceous, silky outside. Petals 5, obovate, 4–5 mm long, 1–2 mm wide, densely appressed-hairy outside; scales without crests. Disc complete. Samaras 2.5–4 cm long, pubescent or wings puberulent; wings recurved, obtuse.
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