This name is a synonym of Euphorbia apatzingana McVaugh.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 37853) with original publication details: Contr. Univ. Michigan Herb. 19: 211 1993.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:971821-1.
This name was in version 1 of The Plant List, record kew-37853, and has not been changed.