This name is a synonym of Fraxinus pennsylvanica Marshall.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100192325) with original publication details: Viagg. Stati Uniti 2: 244 1790.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105785-2.
This name was in version 1 of The Plant List, record tro-100192325.