This name is a synonym of Atriplex purshiana Moq..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Amer. Monthly Mag. & Crit. Rev. 1: 176 1818.
This name was in version 1 of The Plant List, record kew-2665230.