This name is a synonym of Ulmus laevis Pall..
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Fl. Berol. Prodr. 94 1787.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:856847-1.
This name was in version 1 of The Plant List, record kew-2448706.