This name is a synonym of Stellaria borealis subsp. sitchana (Steud.) Piper & Beattie.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 6301597) with original publication details: Rhodora 42(499): 255 1940.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:244174-2.
This name was in version 1 of The Plant List, record tro-6301597, and has not been changed.