This name is a synonym of Geranium donianum Sweet.
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. 151: t. 9092 1926.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:373683-1.
This name was in version 1 of The Plant List, record kew-2824091, and has not been changed.