This name is a synonym of Atriplex gardneri (Moq.) Standl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50084007) with original publication details: Prodr. 13(2): 114–115 1849.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:310421-2.
This name was in version 1 of The Plant List, record tro-50084007.