This name is a synonym of Rhododendron florulentum P.C. Tam.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060801) with original publication details: Survey of Genus Rhododendron in S. China 39, 98, f. 3 1983.
This name was in version 1 of The Plant List, record tro-50060801, and has not been changed.