Deciduous tree (7–)12–20 m tall; stems terete, hispid to glabrous, hairs simple, stellate, tufted and subsessile- (rarely stalked-) glandular. Leaves suborbicular, usually unlobed, 7–28 cm long, 5–20 cm wide, apex acuminate, margin finely and closely serrate, base deeply cordate, upper surface scabridulous, rarely glabrous, lower surface puberulous or tomentellous, frequently with tufts of hairs at base of main nerves; petiole 3.6–20 cm long; stipules with the basal half transversely oblong or ellipsoid-oblong, the upper half narrowly triangular, 0.5–2.1 cm long, 0.1–0.8 cm wide, caducous to persistent. Inflorescence axillary, 5.5–22 cm long, with two or more branches, each sub-umbellate, many-flowered; peduncle 2.3–13.4 cm; bracts lanceolate, 0.7–1.7 cm long, 0.3–0.6 cm wide, acuminate, glabrescent, caducous; branches usually once-forked near the apex, bracteoles 1–1.2 cm long; epicalyx bracts inserted at calyx base, ovate, 0.4–1.1 cm long, 0.2–0.5 cm wide; apex acute to acuminate, caducous. Calyx lobes erect or reflexed, lanceolate-triangular, 0.5–1.3≈0.2–0.4 cm. Petals pink or white, with or without a red base or veins, 1.1–1.9 cm long. Androecium 0.8–1.8 cm long; staminal tube dilating towards apex or sides convex; staminodes 0.4–1.3 cm long; longest stamen 0.6–1.1 cm; anthers 0.2–0.3 cm long. Ovary globose or ovoid, tomentose; style 0.6–1.1 cm long, 5-branched. Capsule globose, rarely depressed–ovoid, tomentose; seeds ovoid-oblong, 0.3≈0.2 cm, dark brown.
