This name is a synonym of Atriplex sagittifolia Speg..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Anales Soc. Ci. Argent. 53: 291 1902.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:26462-2.
This name was in version 1 of The Plant List, record kew-2665764, and has not been changed.