Description from Flora of China
Shrubs low. Branchlets brownish purple, slender, slightly angled, pubescent when young, later glabrescent; buds ovoid, small, with several scales, apex obtuse or subacute. Petiole 3–4 mm, villous; leaf blade rhombic-obovate, 12–20 × 8–14 mm, abaxially sparsely villous on veins, adaxially glabrous, veins raised abaxially, impressed adaxially, base cuneate, margin sparsely crenate-serrate above middle, apex subobtuse. Racemes terminal, pedunculate, umbellate, 15–20-flowered; peduncle villous; pedicels 7–10 mm, glabrous; bracts linear. Hypanthium campanulate, glabrous abaxially. Sepals triangular, 1–1.5 mm, about as broad as long, recurved in fruit, apex acute. Petals white, subovate or orbicular, ca. 2 × 3 mm, glabrous, base shortly clawed, apex emarginate. Stamens ca. 20, unequal; filaments ca. 2 mm; anthers reniform. Disk annular, 10-lobed; lobes emarginate at apex. Carpels villous; styles shorter than stamens. Follicles spreading; styles abaxial. Fl. Mar–May, fr. Jun–Aug.
Coastal limestone areas. E Taiwan.