This name is a synonym of Atriplex glabriuscula var. acadiensis (Tascher.) S.L.Welsh.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Canad. J. Bot. 50: 1577 1972.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:320904-2.
This name was in version 1 of The Plant List, record kew-2664996, and has not been changed.