This name is a synonym of Deschampsia patula (Phil.) Skottsb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 407782) with original publication details: Revista Argent. Agron. 20: 12 1953.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:298719-2.
This name was in version 1 of The Plant List, record kew-407782.