This name is a synonym of Bromus catharticus Vahl.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 404100) with original publication details: Revista Sudamer. Bot. 6: 144 1940.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:52506-2.
This name was in version 1 of The Plant List, record kew-404100.