This name is a synonym of Polystichum munitum (Kaulf.) C. Presl.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50275144) with original publication details: Contr. U.S. Natl. Herb. 10: 493 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17260250-1.
This name was in version 1 of The Plant List, record tro-50275144.