Photinia villosa DC.

in Japan, Honshu, Kobe, May 2008 (picture1)
in Japan, Awaji Island, May 2008 (picture 2)
in Japan, Honshu, road to Mt. Rokko, May 2008 (pictures 3 & 4)

Description in Prodr. (DC.) 2: 631 (1825)