This name is a synonym of Phalaris angusta Nees ex Trin..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50050254) with original publication details: Anales Mus. Nac. Buenos Aires 21: 63 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:192258-2.
This name was in version 1 of The Plant List, record tro-50050254.