Carpinus japonica Bl.
in Japan, Honshu, road to Mt. Rokko, May 2008 (pictures 2 & 3) in Japan, Shikoku, Omogo, May 2008 (pictures 4 & 5) in Japan, Honshu, Irohazaka slope, June 2010 (picture 6) in Japan, Honshu, Nikko, June 2010 (picture 7)