This name is a synonym of Euphorbia rockii C.N.Forbes.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38213) with original publication details: Brittonia 37: 398 1985.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:924154-1.
This name was in version 1 of The Plant List, record kew-38213.