This name is a synonym of Rhododendron augustinii Hemsl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12303872) with original publication details: Contr. Biol. Lab. Sci. Soc. China 12: 78 1939.
This name was in version 1 of The Plant List, record tro-12303872.