This name is a synonym of Atriplex lindleyi subsp. conduplicata (F.Muell.) Paul G.Wilson.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Trans. & Proc. Rep. Roy. Soc. South Australia 16: 345 1892.
This name was in version 1 of The Plant List, record kew-2665333, and has not been changed.