Synonyms: Aspidium tetragonum; Cyclosorus tetragonus (homotypic); Dryopteris subtetragona; Dryopteris tetragona; Goniopteris feei; Goniopteris macrocladia; Goniopteris submarginalis; Goniopteris subtetragona; Goniopteris tetragona var. macrocarpa; Goniopteris tetragona var. martinicensis; Goniopteris tetragona var. plumieri; Goniopteris tetragona var. schkuhrii; Goniopteris tetragona var. tetragonoides; Monogonia palustris; Nephrodium androgynum; Nephrodium aureo-viridum; Nephrodium calcareum; Nephrodium tetragonum; Phegopteris tetragona; Polypodium androgynum; Polypodium androgynum var. tetragonum (homotypic); Polypodium subtetragonum; Polypodium tetragonum (homotypic); Thelypteris subtetragona; Thelypteris tetragona