This name is a synonym of Euphorbia macgillivrayi Boiss..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 333725) with original publication details: Biblioth. Bot. 89: 311 1927.
This name was in version 1 of The Plant List, record kew-333725, and has not been changed.