This name is a synonym of Atriplex glauca subsp. mauritanica (Boiss. & Reut.) Dobignard.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bull. Soc. Hist. Nat. Afrique N. 34: 185 1943.
This name was in version 1 of The Plant List, record kew-2665308.