Shrubs low, 1–1.5 m tall. Branchlets brownish to red-brown, tortuous, slender, pubescent when young, finally glabrous; buds ovoid, small, with several scales, pubescent, apex acute to acuminate. Petiole 1–3 mm, pubescent; leaf blade abaxially gray-green, adaxially dark green, ovate to ovate-lanceolate, 2–5 × 1.2–2.5 cm, abaxially pubescent, papillose, adaxially glabrous, base broadly cuneate to subrounded, margin deeply incised serrate or lobed above middle, apex acute. Racemes umbellate, 2–3.5 × 2–2.5 cm, 10–30-or more flowered; pedicels 5–10 mm, pubescent; bracts linear-lanceolate, 2–4 mm, pubescent. Flowers 7–9 mm in diam. Hypanthium campanulate, pubescent abaxially. Sepals ovate-triangular, 1.5–2.5 mm, erect in fruit, apex acute. Petals white, suborbicular or obovate, 2.5–4 × 2.5–3.5 mm, apex obtuse. Stamens 45–60, longer than petals. Disk annular, ca. 20-lobed; lobes obtuse at apex. Styles shorter than stamens. Follicles spreading, pubescent; styles terminal on abaxial side, somewhat divergent or suberect. Fl. May–Jun, fr. Aug–Sep.
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