This name is a synonym of Hicorius ovata var. grandis (Ashe) Ashe.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50324341).
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1089977-2.
This name was in version 1 of The Plant List, record tro-50324341.