This name is a synonym of Carya ovata var. australis (Ashe) Little.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Kalmia 13: 4 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:47820-2.
This name was in version 1 of The Plant List, record kew-2701810.