This name is a synonym of Vaccinium sericeum var. elongatum (Ashe) Sleumer.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50140541) with original publication details: J. Elisha Mitchell Sci. Soc. 46(2): 206 1931.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:205320-2.
This name was in version 1 of The Plant List, record tro-50140541, and has not been changed.