This name is a synonym of Plectranthus buchananii Baker.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 45870) with original publication details: Mem. New York Bot. Gard. 9: 43 1954.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:445927-1.
This name was in version 1 of The Plant List, record kew-45870.