Chloranthus japonicus Sieb.

Distribution : Japan, Korea, China (Gansu, Hebei, Jilin, Liaoning, Shaanxi, Shandong, Shanxi), E.Russia
Picture 2 in Japan, Honshu, Ofuna, May 2008
Picture 3 in Japan, Honshu, Nagano, June 2010

Description in Nov. Act. Nat. Cur. xiv. II. (1829) 681