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 82765) with original publication details: Descr. Icon. Pl. Hung. 2: 176 1805 publ. 1803.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:348706-1.
This name was in version 1 of The Plant List, record kew-82765.