This name is a synonym of Rhododendron cavaleriei H. Lév..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50149481) with original publication details: Survey of Genus Rhododendron in S. China 113, f. 17 1983.
This name was in version 1 of The Plant List, record tro-50149481, and has not been changed.