俞藤(原变种) yu teng (yuan bian zhong)

Vitis thomsonii M. A. Lawson in J. D. Hooker, Fl. Brit. India 1: 657. 1875 ["thomsoni"]; Cayratia thomsonii (M. A. Lawson) Suessenguth; Cissus thomsonii (M. A. Lawson) Planchon; Parthenocissus thomsonii (M. A. Lawson) Planchon; Psedera thomsonii (M. A. Lawson) Stuntz.

Branchlets, petioles, adaxial leaflet surface, peduncles, pedicels, and petals glabrous; abaxial leaflet surface glabrous or sparsely pubescent on veins. Fl. May-Jun, fr. Jul-Sep.

Forests on hillsides; 200-1300 m. Anhui, SW Fujian, Guangxi, SE Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, SE Sichuan, Taiwan, Zhejiang [India, Nepal].