This name is a synonym of Euphorbia orbifolia (Alain) Oudejans.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38146) with original publication details: Phytologia 47: 175 1980.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:274432-2.
This name was in version 1 of The Plant List, record kew-38146, and has not been changed.