Akebia trifoliata (Thunb.) Koidz.

in China, Sichuan, Mt.Emei, june 2002 (pictures 1 & 2)
in China, Sichuan, Wolong, 1 may 2007 (pictures 3, 4, 5 & 6)
in Japan, Honshu, road to Mt.Rokko, May 2008 (picture 7)
in Japan, Honshu, Mt.Fuji, May 2008 (picture 8)

Description in Bot. Mag. (Tokyo) 39:310 (1925)