This name is a synonym of Stipagrostis lutescens var. marlothii (Hack.) De Winter.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394843) with original publication details: Fl. Cap. 7: 567 1899.
This name was in version 1 of The Plant List, record kew-394843, and has not been changed.