This name is a synonym of Rhododendron dalhousieae var. rhabdotum (Balf. f. & R.E. Cooper) Cullen.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12303786) with original publication details: Notes Roy. Bot. Gard. Edinburgh 10(47–48): 141–142 1917.
This name was in version 1 of The Plant List, record tro-12303786, and has not been changed.