Description from Flora of China
Shrubs, 1-2 m tall; branches densely villosulous, hirtellous, or tomentose sometimes becoming glabrescent. Leaves isophyllous to slightly anisophyllous; petiole 0.7-3 cm, densely villosulous to hirtellous; blade drying papery, oblong-elliptic to elliptic or ovate, 8-25 × 3.5-9 cm, both surfaces moderately to densely hispidulous to hirtellous, base obtuse to acute and often long decurrent, apex acute to acuminate; secondary veins 12-23 pairs; stipules usually persistent with leaves, oblong-lanceolate to ovate, 0.8-2 cm, glabrous except villous along midrib and sometimes margins, acute, acuminate, or shortly 2-lobed. Inflorescences terminal, congested- to laxly cymose, several to many flowered, densely villosulous or hirtellous; peduncle 0.7-3 cm; branched portion 1.5-6 × 2.5-9 cm; bracts ovate, lanceolate, suborbicular, reniform, or stipuliform, 2-10 mm, often marginally sparsely to densely stipitate-glandular; pedicels 1.5-4 mm. Flowers pedicellate. Calyx densely hirtellous; hypanthium portion subglobose-campanulate, ca. 2 mm; limb deeply lobed; lobes broadly triangular, 2-2.5 mm, marginally densely stipitate-glandular and sometimes appearing lacerate, glands 0.3-0.6 mm. Corolla yellow, tubular, outside sparsely to densely villosulous or hirtellous; tube 4-6 mm, sparsely villous inside; lobes triangular, 1-1.8 mm. Berries capsular, subglobose, 3.5-4.5 mm in diam., densely hirtellous or villosulous. Fl. Jun-Jul, fr. Sep-Oct.
● Forests; 500-1600 m. Hainan, Yunnan.