This name is a synonym of Hierochloe australis (Schrad.) Roem. & Schult..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397730) with original publication details: Fl. Franç. ed. 3, 3: 42 1805.
This name was in version 1 of The Plant List, record kew-397730, and has not been changed.