This name is a synonym of Stipagrostis namaquensis (Nees) De Winter.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394908) with original publication details: Ann. Bot. Syst. 3: 750 1852.
This name was in version 1 of The Plant List, record kew-394908, and has not been changed.