This name is a synonym of Tridens flavus (L.) Hitchc..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50081537) with original publication details: Castanea 20: 58 1957.
This name record (from Tropicos) 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 Tridens flavus in version 1 of The Plant List.