This name is a synonym of Euphorbia mitchelliana Boiss..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38112) with original publication details: Austral. J. Bot. 24: 640 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:988583-1.
This name was in version 1 of The Plant List, record kew-38112, and has not been changed.