This name is a synonym of Euphorbia greggii Engelm. ex Boiss..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 78702) with original publication details: Wrightia 5: 129 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:101346-2.
This name was in version 1 of The Plant List, record kew-78702.