This name is a synonym of Rhododendron souliei Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060132) with original publication details: Bull. Géogr. Bot. 24(295–297): 282 1914.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:332238-1.
This name was in version 1 of The Plant List, record tro-50060132, and has not been changed.