This name is a synonym of Carpinus caroliniana subsp. virginiana (Marshall) Furlow.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 34306) with original publication details: Rhodora 37: 425 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:47666-2.
This name was in version 1 of The Plant List, record kew-34306.