This name is a synonym of Carpinus laxiflora (Siebold & Zucc.) Blume.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 460970) with original publication details: Acta Phytotax Geobot. 9: 23 1940.
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Carpinus laxiflora in version 1 of The Plant List.