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 450729) with original publication details: Willdenowia 36: 662 2006.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77075463-1.
This name was in version 1 of The Plant List, record kew-450729.