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: Bot. Gaz. 34: 359 1902.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:26484-2.
This name was in version 1 of The Plant List, record kew-2665855, and has not been changed.