This name is a synonym of Plectranthus otostegioides (Gürke) Ryding.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 34036) with original publication details: Bot. Jahrb. Syst. 21: 106 1895.
This name was in version 1 of The Plant List, record kew-34036, and has not been changed.