This name is a synonym of Euphorbia esula subsp. tommasiniana (Bertol.) Kuzmanov.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 349283) with original publication details: Fl. Italia 2: 288 1901.
This name was in version 1 of The Plant List, record kew-349283.