Climbing gentian
Tripterospermum japonicum (Sieb. et Zucc.) Maxim.
[Gentianaceae]
Tsururindou (ツルリンドウ, 蔓竜胆)
Lifeform: perennial herbaceous vine
Distribution: China- Japan
Synonyms
T. trinervium (Thunb.) H. Ohashi et H. Nakai
T. japonicum (Sieb. et Zucc.) Maxim. var. tenue (Masamune) Honda
Tripterospermum Blume in Japan
T. japonicum (Sieb. et Zucc.) Maxim. (ツルリンドウ)
T. trinervium (Thunb.) H.Ohashi et H.Nakai var. involubile (N. Yonez.) H. Ohashi et H. Nakai (テングノコヅチ)
Tripterospermum japonicum in Hokkaido

Under a dwarf bamoboo shrub in Shinsen Bog, Niseko, on June 26, 2006.
References
- Field training on integrated environmental research 統合環境調査法実習 [fauna and flora 出現種リスト]