Description from Flora of China
Shrubs evergreen, terrestrial or epiphytic, 1.2–2(–5) m tall, with inflated root tubers. Twigs rounded to angled, densely brown setose-hispid or glandular setose, glabrescent, scabrous, densely punctiform-lenticellate; persistent bud scales scattered, lanceolate. Leaves quite dense; petiole very short or leaves subsessile; leaf blade lanceolate or oblanceolate, 2.5–4.5 × 0.6–1.7 cm, papery, glabrous or adaxially puberulous at base of midvein, secondary veins 5–7 pairs, secondary and fine veins raised on both surfaces, base cuneate, margin plane, sparsely serrulate, apex acute or slightly obtuse, mucronulate. Inflorescences from defoliate to upper foliate axils, racemose, 2–5 cm, slender, glabrous, with persistent bud scales, ca. 5-flowered; bracts caducous, ovate-lanceolate, 1.5–2 mm, glandular ciliate. Pedicel 0.8–1.2 cm, glabrous. Hypanthium 0.8–1.3 mm, glabrous; calyx lobes ovate-triangular, 0.8–1 mm. Corolla greenish white or greenish yellow, urceolate, ca. 5 mm, glabrous; lobes reflexed, ca. 0.5 mm. Filaments ca. 1 mm, glabrous; anthers ca. 4 mm, without spurs; tubules ca. 2 × as long as thecae. Berry 10-pseudoloculed, 4–5 mm in diam. Fl. Mar–Apr, fr. May–Aug.
Montane forests, sometimes epiphytic on trunks of old trees, rocks; 1500–3300 m. W Yunnan [Bhutan, Myanmar].