Trees or small trees 5-8 m tall. Branches and branchlets densely stellate pubescent. Stipules subulate; petiole 1-3 cm, stellate pubescent; leaf blade ovate or suborbicular, sometimes obscurely 3-lobed, 7-15 × 4-9 cm, abaxially densely stellate pilose, adaxially sparsely stellate pubescent or glabrescent, basal veins 5-7, base subcordate or rounded, margin entire, apex acute to acuminate. Pedicel 0.5-1.5 cm, stellate pubescent. Epicalyx lobes (3-)4-6, oblong-lanceolate, 1-1.5 × ca. 0.5 cm, accrescent, conspicuously striate and reticulate, abaxially densely stellate velutinous, adaxially sparsely stellate pubescent, apex rounded. Calyx lobes 5, triangular, ca. 1 × 0.4-0.5 cm, connate for 1/2 length, stellate hairy. Corolla ca. 2.5 cm in diam.; petals 5, white or yellow, oblong, 1-2.5 × 1-1.5 cm, abaxially densely stellate pubescent, adaxially with simple hairs at base. Filament tube 0.8-1 cm, hairy; anthers many, reniform. Ovary ovoid; style branches 2, ca. 2.5 cm, densely stellate hairy; stigma capitate, rugose. Fruit subglobose, ca. 8 mm in diam., densely stellate pubescent. Seeds ca. 4 × 3 mm, glabrous.
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