This name is a synonym of Euphorbia missurica Raf..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 38304) with original publication details: Ill. Fl. N. U.S. ed. 2, 2: 464 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:55472-2.
This name was in version 1 of The Plant List, record kew-38304.