This name is a synonym of Ophioglossum costatum R. Br..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26602986) with original publication details: Bot. Misc. 3: 218 1833.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17168160-1.
This name was in version 1 of The Plant List, record tro-26602986.