82 EIGHTEENTH REPORT. 



FiLix GOLDiANA var. CELSA (Palmer), N. Comb. 



Dryopteris Goldiana celsa Palmer, Proc. Biol. Soc. Wash., 13, 

 65, 1899. 



FiLix MARGiNALis (Liiiiie), N. Comb. 



Poly podium marginalc Linne, Sp. PL, 1001, 1753. 



FiLix MARGINALIS var. BiPiNNATiFiDA (Clute), N. Comb. 



Nephrodium marginale f. hipinnatifidtim Clute, Fern Bui. 19, 50, 

 1911. 



In woods at Detroit No. 1652, August 22, 1899, rare. This fern 

 has the general appearance of F. spinulosa var. Americana but it 

 is not spinulose and the sori are marginal. It apparently is the 

 same thing described by Clute as Nephrodium marginale forma 

 bipinnatifidum. It may be one of the so-called fern hybrids with 

 Filix marginalis and F. spinulosa var. Americana as the parents. 



FiLix MONTANA (Voglcr), N. Comb. 



Polypodium moiitanum Volger, Dissert, 1781. 



Polypodium oreopteris Ehrh. ex. Willd., Prod., 292, 1787. 



FiLix NOVERORACENSis (Liunc), N. Comb. 



Polypodium Novehoracense Linne, Sp. PI., 1091, 1753. 



Filix opposita (Vahl), (Polypodium oppositum Vahl, Eel. 

 Amer., 3, 53, 1807) var. strigosa (Fee), N. Comb. 



Aspidium strigosum Fee, 11 MeM., 78, t. 22, f. 2, 1860. 



Dryopteris contermina strigosa (Fee) Underwood. 



Filix oregana (C. Chr.), N. Comb. 



Dryopteris Oregana C. Chr., Ind. Fil., 281, 1905. 



Filix parasitica (Linne), N. Comb. 



Polypodium parasiticum Linne, Sp. PL, 1090, 1753. 



Filix patens (Swartz), N. Comb. 



Polypodium patens Swz., Prod., 133, 1788. 



Filix patens var, stipularis (Willd), N. Comb. 



Aspidium stipulare Willd, Sp. PL, 5, 239, 1810. 



Filix patula (Swartz), N. Comb. 



Aspidium patulum Swz., Yet. Ak. Hdl., (1817) 61. 



Filix rigida (Hofifm.) (Polypodium rigidum Hoffm., Deutsch. FL, 

 2, 6, 1795) var. arguta (Klf.), N. Comb. 



Aspidium argutum Klf., Enum., 212, 1824. 



Filix setigera (Blume), N. Comb. 



Cheilanthes setigera Blume, Enum., 138, 1828. 



Filix spinulosa (Muell.) Farwell var. Americana (Fischer), N. 

 Comb. 



Aspidium spinulosum Americanum Fischer ex. Kudz, Amer. 

 Jour. Sci., Ser. 2, 6, 84, 1848. 



