Description from Flora of China
Shrubs scandent or trees, epiphytic. Stems canescent yellow, 4-sided, glabrous, lenticellate; bark corky and wrinkled. Leaves 3-5-verticillate; petiole 0.8-1.5 cm, glabrous; petiole 0.8-1.5 cm, glabrous; leaf blade elliptic to obovate-elliptic, 6-8 × 3-4.5 cm, stiffly papery to subleathery, both surfaces glabrous, secondary veins 1 on each side of midvein, base broadly cuneate, margin entire, apex broadly acute. Inflorescences inserted on leafless stems or branches, cymose, 2-3 cm, 3-5-flowered; peduncle 4-8 mm, glabrous. Flowers 4- or 5-merous. Hypanthium tubular, 0.8-1.2 cm, apex truncate. Calyx lobes inconspicuous, glabrous. Petals greenish, yellowish green, or white, long elliptic, ca. 2 × 0.8-1 cm, oblique, glabrous, base gradually narrowed, apex rounded. Stamens 8-10, equal; filaments 1.2-1.5 cm; anthers linear-lanceolate, curved, unequal, ca. 1.5 or 0.7 cm, base tuberculate; connective decurrent, forming a short spur. Ovary subglobose. Berry subglobose-flask-shaped; hypanthium ca. 1.4 cm, tubular. Fl. Jun-Jul, fr. Aug-Sep.
● Forests, streamsides, on stones, epiphytic on trees, shaded places. Hainan (Baoting).