This name is a synonym of Rhododendron indicum (L.) Sweet.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060807) with original publication details: Fl. Serres Jard. Eur. 9: 79 1853-1854.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:332293-1.
This name was in version 1 of The Plant List, record tro-50060807.