Trees or shrubs, 10–15 m tall. Branchlets purplish brown to blackish brown when old, terete, initially densely rust-brown tomentose, gradually glabrescent, glabrous when old, with grayish white lenticels; buds ovoid, 5–7 mm, apex ± obtuse to ± acute; scales several, dark brown, glabrous. Leaves simple; petiole 2–3 cm, densely rust-brown tomentose; leaf blade ovate or elliptic-ovate, rarely elliptic-obovate, 9–14 × 5–8 cm, lateral veins 10–12 pairs, slightly curved and anastomosing toward leaf margin, both surfaces rust-brown tomentose when young, usually only abaxially sparsely tomentose when old, base broadly cuneate to rounded, margin shallowly crenulate apically, apex shortly acuminate, rarely acute. Compound corymbs terminal, 5–7 cm in diam., ca. 20–30-flowered or more; rachis and pedicels densely rust-brown tomentose. Pedicel 3–5 mm. Flowers 7–10 mm. Hypanthium campanulate, abaxially rust-brown tomentose. Sepals reflexed after anthesis, triangular-ovate, ca. 2 mm, apex acute. Petals yellowish white, broadly ovate or elliptic, 3–4 × ca. 3 mm, adaxially sparsely pilose, base clawed, apex obtuse or emarginate. Stamens 15–20, unequal in length, longer ones longer than petals. Styles (2 or)3 or 4, somewhat not exceeding stamens, glabrous, connate at base. Fruit subglobose, ca. 1 cm in diam., 3-or 4-loculed, prominently but minutely lenticellate, with an annular scar. Fl. Mar–Apr, fr. Jul–Aug.
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