This name is a synonym of Atriplex elegans (Moq.) D.Dietr..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 7202491) with original publication details: Prodr. 13(2): 113 1849.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:171302-2.
This name was in version 1 of The Plant List, record tro-7202491.