This name is a synonym of Trematodon longicollis Michx..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35120214) with original publication details: Syn. Musc. Frond. 1: 458 1848.
This name was in version 1 of The Plant List, record tro-35120214.