Schizocodon soldanelloides Sieb. & Zucc.

Pictures 1 to 5 in Japan, Honshu, Gomi Pond, June 2010
Pictures 6 to 9 in Japan, Honshu, Mt. Rokko, May 2008

Description in Abh. Akad. Muench. iii. (1843) 725. t. 2. f. 1