This name is a synonym of Plectranthus montanus Benth..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 158329) with original publication details: Fl. Trop. Afr. 5: 414 1900.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:454575-1.
This name was in version 1 of The Plant List, record kew-158329.