Description from Flora of China
Plants 60-100 cm tall. Roots stout, ca. 2.5 cm in diam. Stems erect, woody at base, mostly unbranched. Petiole 1-3 cm; leaf blade elliptic, 5-15 × 2-8 cm, base obtuse or cuneate, sometimes oblique, apex acute or short acuminate; veins arcuate ascending, sparsely pubescent with minute hairs, glabrescent. Inflorescences solitary or paired flowers. Pedicel 1-2.5 cm. Calyx tubular, short campanulate, 1/4 to 1/3 as long as corolla, ca. 4 × 6 mm, 5-dentate; lobes erect, equal, deltate, densely villous abaxially, ciliate. Corolla white, campanulate, 1-1.7 × 1-1.7 cm; lobes deltate, 5-7 mm, pubescent abaxially. Stamens ca. 6 mm; filaments ca. 4 mm, glabrous; anthers 1.8-2 mm. Ovary conical. Fruiting pedicel 3-5 cm, glabrous. Fruiting calyx ovoid-globose, slightly exceeding berry, closely and entirely enveloping it, sometimes slightly open at apex; lobes very short, persistent. Berry globose, ca. 1.5 × 1.7 cm. Seeds ca. 3 × 2.5 mm. Fl. May-Jun, fr. Jul-Aug.
* Forests; 1800-2600 m. Yunnan (Fengqing Xian, Yangbi Xian).