This name is a synonym of Aristida adscensionis L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394315) with original publication details: Bull. Soc. Échange Pl. Vasc. Eur. Occid. Bassin Médit. 16: 134 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:881478-1.
This name was in version 1 of The Plant List, record kew-394315.