This name is a synonym of Euphorbia guerichiana Pax ex Engl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 79766) with original publication details: Fl. Cap. 5(2): 270 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:346567-1.
This name was in version 1 of The Plant List, record kew-79766, and has not been changed.