This name is a synonym of Geranium yesoense Franch. & Sav..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bot. Mag. (Tokyo) 26: 264 1912.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:373330-1.
This name was in version 1 of The Plant List, record kew-2823617, and has not been changed.