This name is a synonym of Atriplex wolfii var. tenuissima (A.Nelson) 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: Amer. Midl. Naturalist 27: 253 1942.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:26485-2.
This name was in version 1 of The Plant List, record kew-2665856, and has not been changed.