Shrubs or small trees, deciduous, 3–5 m tall. Branchlets brownish to brownish black, slender, with scattered lenticels; buds ovoid, 3–5 mm, glabrous. Petiole 5–10 mm, glabrous; leaf blade lanceolate or oblong-lanceolate, 7–11 × 1.5–4 cm, thinly papery, veins 7–9 pairs, midvein raised abaxially and impressed adaxially, both surfaces glabrous or puberulous along midvein abaxially, base cuneate, margin densely minutely sharply serrate, apex long acuminate. Compound corymbs terminal, 3–7 × 3–5 cm, loose, few flowered; rachis and pedicels glabrous, lenticellate. Pedicel 0.8–1.2 cm, slender. Flowers 1–1.2 cm in diam. Hypanthium cupular, 2–3 mm, abaxially glabrous. Sepals triangular-ovate, 1–2 mm and nearly as broad, apex acute. Petals white, broadly obovate or suborbicular, 4–6 mm in diam., base clawed, apex emarginate. Stamens ca. 20, shorter than petals. Ovary pilose apically; styles 3, connate nearly to apex, equalling or lower than stamens. Fruit reddish brown, obovoid or subglobose, 6–8 mm in diam., glabrous. Fl. Apr–May, fr. July–Sep.
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