Description from Flora of China
Solanum cathayanum C. Y. Wu & S. C. Huang; S. dulcamara var. chinense Dunal; S. dulcamara var. pubescens Blume; S. dulcamara var. lyratum (Thunberg) Bonati.
Vines herbaceous, much branched, 0.5-3 m tall, villous overall with elongate, many-celled hairs more than 2 mm. Petiole 1-3 cm; leaf blade elliptic or lyrate, 3-11 × 2-6 cm, base cordate or hastate, margin entire or 3-5-parted, apex acuminate. Inflorescences axillary, extra-axillary, or appearing terminal, few- to many-flowered panicles; peduncle 2-4 cm, villous. Pedicel 0.8-1.5 cm, villous. Calyx 1.5-2.5 × 3-4 mm in diam., sparsely pubescent; lobes rounded. Corolla blue-purple or white, 5-8 × 10 mm; lobes elliptic-lanceolate, ca. 4 × 2 mm, usually reflexed, puberulent at apex. Filaments ca. 0.8-1 mm; anthers free, oblong, 2.8-3.2 mm. Style glabrous, 6-8 mm. Fruiting pedicel sparsely pubescent, usually curved. Berry red or red-black, globose, 7-9 mm in diam. Seeds discoid, ca. 1.5 mm in diam., reticulate. Fl. Jun-Oct, fr. Oct-Nov.
Stems can be used as a medicine for treating convulsions in infants, and branches and leaves for clearing away heat and cooling the blood.
Grasslands in valleys, near roads and fields; 100-2900 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Cambodia, Japan including Ryukyu Islands, Korea, Laos, Myanmar, Thailand, Vietnam.]