This name is a synonym of Euphorbia brachycera Engelm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 80953) with original publication details: Rep. U.S. Mex. Bound. 2(1): 192 1858.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1039483-2.
This name was in version 1 of The Plant List, record kew-80953.