This name is a synonym of Trisetum cernuum Trin..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397643) with original publication details: Fl. Antarct. 378 1846.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391538-1.
This name was in version 1 of The Plant List, record kew-397643.