Shrubs 1.5–3 m tall. Branchlets brownish, densely yellow-grayish tomentose, glabrescent when old; buds shortly or long ovoid, with 2 scales, densely tomentose. Petiole 6–10 mm, densely tomentose; leaf blade broadly ovate to rhombic-ovate, 4–7 × 3–5 cm, sericeous-villous on both surfaces, more densely so abaxially, base cuneate to subrounded, margin lobed and incised doubly serrate, apex acute to shortly acuminate. Corymbs borne on lateral branchlets, compound, to 16 cm wide, densely many flowered; rachis and pedicels densely yellow-grayish tomentose; pedicels 4–6 mm; bracts linear-lanceolate or linear, tomentose. Flowers 4–6 mm in diam. Hypanthium campanulate, tomentose abaxially. Sepals triangular, spreading or rarely reflexed in fruit, apex acute. Petals white, suborbicular, 2–3 mm in diam., apex obtuse. Stamens much longer than petals; anthers white. Disk annular; lobes distinct, broad. Carpels densely hairy; styles shorter than stamens. Follicles spreading, softly hairy throughout; styles terminal on abaxial side. Fl. Jun–Aug, fr. Aug–Oct.
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