Shrubs scandent. Branchlets brown-red, glabrous. Petiole 2-6 cm, glabrous; leaf blade abaxially glaucous, slightly yellow when dry, adaxially dark green, narrowly ovate, 8-15 × 4-8 cm, papery, abaxially densely granulate glandular, glabrous or sometimes barbate at vein axils, adaxially glabrous, secondary veins 7 or 8 on both sides of midvein, often 1-4-branched, curved, base rounded to broadly cuneate, margin slightly reflexed and entire or apically sparsely denticulate, apex narrowly acuminate. Inflorescences corymbose; peduncle and branches subglabrous. Sterile flowers with expanded sepal 1, narrowly ovate to lanceolate, 2-6 × 1-3 cm, base cuneate, apex obtuse. Fertile flowers with calyx tube obconical, 1-1.5 mm; teeth triangular, ca. 0.5 mm. Petals oblong, ca. 2 × 1-1.4 mm. Stamens unequal, some slightly longer than petals, others ca. 2 × as long as petals; anthers subglobose, ca. 0.5 mm in diam. Style and stigma ca. 1 mm. Capsule narrowly obconical, 5-7 × 2.5-3 mm including style, projected apical part shortly conical, 0.5-1 mm. Seeds narrowly fusiform, slightly compressed, 2.5-3 × ca. 0.4 mm; apical wing ca. 1.5 mm. Fl. Jun-Jul, fr. Sep-Oct.

* Dense forests on mountain slopes, open rocky places; 1000-1200 m. Guangdong, Hunan, Sichuan.