This name is a synonym of Rhododendron campylogynum Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50156597) with original publication details: Rhododendron Year Book 8: 84 1954.
This name was in version 1 of The Plant List, record tro-50156597, and has not been changed.