This name is a synonym of Atriplex pacifica A.Nelson.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name with original publication details: Syn. Pl. 5: 536 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:163963-1.
This name was in version 1 of The Plant List, record kew-2665497, and has not been changed.