Tree to 25 m high, glabrous except inflorescence; branchlets lenticellate. Leaves paripinnate; rachis 1–2.5 cm long; leaflets usually 1 or 2 pairs; lamina oblong or obovate-elliptic, truncate or retuse, 4–9.5 cm long, 1.5–4.5 cm wide; cuneate or acute, or obtuse at base; lateral veins oblique, raised and prominent especially below; petiolule 2–6 mm long; petiole 1–4.5 cm long. Panicles many-flowered, to 17 cm long; pedicels 5–6 mm long. Sepals 3–3.5 mm long, 2–5 mm wide, thin, silky outside. Petals 4, obovate, c. 6 mm long, c. 3 mm wide, glabrous or puberulous on claw; scales densely hairy, crested. Disc unilateral. Samaras to 3.5 cm long, glabrous; wings divaricate.
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