This name is a synonym of Chrysosplenium macrostemon var. viridescens (Sutô) 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: Nov. Fl. Jap. 3: 109 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:790687-1.
This name was in version 1 of The Plant List, record kew-2720296, and has not been changed.