This name is a synonym of Rhododendron calophytum var. openshawianum (Rehder & E.H. Wilson) D.F. Chamb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060051) with original publication details: Pl. Wilson. 1: 543 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:333002-1.
This name was in version 1 of The Plant List, record tro-50060051, and has not been changed.