This name is a synonym of Euphorbia cumulicola (Small) Oudejans.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 37935) with original publication details: Man. S.E. Fl. 794 1933.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:274427-2.
This name was in version 1 of The Plant List, record kew-37935, and has not been changed.