This name is a synonym of Euphorbia proctorii (D.G.Burch) Correll.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38188) with original publication details: Ann. Missouri Bot. Gard. 63: 378 1976 publ. 1977.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:55402-2.
This name was in version 1 of The Plant List, record kew-38188, and has not been changed.