This name is a synonym of Rhododendron oreodoxa var. fargesii (Franch.) D.F. Chamb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060076) with original publication details: Bot. Mag. 142: , pl. 8643 1916.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:332385-1.
This name was in version 1 of The Plant List, record tro-50060076, and has not been changed.