This name is a synonym of Euphorbia setosa (Boiss.) Müll.Arg..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38245) with original publication details: Brittonia 49: 176 1997.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1038861-2.
This name was in version 1 of The Plant List, record kew-38245, and has not been changed.