This name is a synonym of Silene hitchguirei Bocquet.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 6301066) with original publication details: Canad. J. Bot. 56(3): 307 1978.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:236396-2.
This name was in version 1 of The Plant List, record tro-6301066, and has not been changed.