This name is a synonym of Rhododendron haematodes Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060484) with original publication details: Bull. Soc. Bot. France 34: 280–281 1887.
This name was in version 1 of The Plant List, record tro-50060484.