This name is a synonym of Rostraria festucoides (Link) Romero Zarco.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 397685) with original publication details: Fl. Sicul. Syn. 1: 151 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391584-1.
This name was in version 1 of The Plant List, record kew-397685.