This name is a synonym of Tridens chapmanii (Small) Chase.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 447224) with original publication details: Rhodora 56: 27 1954.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:257770-2.
This name was in version 1 of The Plant List, record kew-447224, and has not been changed.