This name is a synonym of Chrysosplenium macrostemon var. shiobarense (Franch.) H.Hara.
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: J. Jap. Bot. 11: 487 1935.
This name was in version 1 of The Plant List, record kew-2720124, and has not been changed.