This name is a synonym of Ophioglossum californicum Prantl.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26602160) with original publication details: Bull. Torrey Bot. Club 19(2): 160 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:174594-2.
This name was in version 1 of The Plant List, record tro-26602160, and has not been changed.