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 and as an invalid name with original publication details: J. Jap. Bot. 10: 257 1934.
This name was in version 1 of The Plant List, record kew-2720095, and has not been changed.