This name is a synonym of Rhododendron tatsienense Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12303834) with original publication details: Acta Phytotax. Sin. 2(1): 83, pl. 9 1952.
This name was in version 1 of The Plant List, record tro-12303834.