Trees, evergreen; bark gray-brown. Branchlets brownish black when dried, sparsely stellate puberulent. Petiole 1-3 cm, swollen at both ends; leaf blade oblong to elliptic, 5-7 × 2.5-3 cm, leathery, both surfaces glabrous, lateral veins 5-7 on each side of midrib, base rounded or obtuse, apex acute or acuminate. Inflorescence cymose-corymbose, densely flowered, puberulent. Calyx campanulate, ca. 6 mm, abaxially stellate puberulent, adaxially hairy on upper part, 5-lobed, lobes ca. 2 mm, apex acute. Petals 5, white, spatulate, slightly extending outward, ca. 10 mm. Androgynophore 2-3 cm. Ovary globose, 5-celled, hairy. Capsule on ca. 2 cm stipe, oblong-pyriform, 5-angular, ca. 3 cm, puberulent. Seeds ca. 2 cm including wing. Fl. Mar-Apr.

Forested slopes or stream banks; 500-1500 m. C, E, and S Guangdong, S Guangxi, Hainan [Cambodia, Vietnam].