This name is a synonym of Vaccinium fragile var. mekongense (W.W. Sm.) Sleumer.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12304555) with original publication details: Notes Roy. Bot. Gard. Edinburgh 11(55): 231–232 1919.
This name was in version 1 of The Plant List, record tro-12304555, and has not been changed.