Branchlets glabrous, drying dark brown; buds compressed, oblong-elliptic, 2–2.5 × ca. 1 cm, puberulent. Stipules 2–2.5 × ca. 1 cm, glabrous; petiole 3–5 cm; leaf blade broadly ovate, sometimes 3-cuspidate, 8–12 × 6–10 cm, drying discolorous, both surfaces glabrous, base truncate, margin entire, apex acute, palmately 3–5-veined, reticulate veins conspicuous. Inflorescences capitate, 7–8-flowered; peduncle 1–1.5 cm, brown tomentose. Petals white, 10–12 × 1–1.5 mm, apex 2-lobed. Stamens 10–11, 5–6 mm; anthers ovoid, connective apiculate. Ovary puberulent; styles ca. 2 mm. Capsules 7–8 mm, smooth. Fl. May–Jun, fr. Aug–Oct.
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