This name is a synonym of Plectranthus leptophyllus (Baker) A.J.Paton.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 45999) with original publication details: Bot. Jahrb. Syst. 19: 214 1894.
This name was in version 1 of The Plant List, record kew-45999.