This name is a synonym of Chrysosplenium macrostemon Maxim. ex Franch. & Sav..
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Enum. Pl. Jap. 2: 359 1878.
This name was in version 1 of The Plant List, record kew-2720123, and has not been changed.