A. Thelypteris (L.) Sw. 



simulatum Davenp. Mt. Toby, A, V. Osmun. 



novehoracense (L.) Sw. 



marginale (L.) Sw. 



Coldmnum Hook. Mt. Tom, S. Stebbins; Mt. Toby : Notch, Mt. 

 Holyoke, A. Y . Osmun. 



Boottii Tuckerm. Mt. Toby. 



cristatum (L ) Sw. 



cristatum L. Sw. var. cjjnconianum D. C. Eaton. Mt. Toby, etc. 



spinulosum (O. F. Miiller) Sw. Mt. Toby, etc 



spmulosum (O. F. Miiller) Sw. var. intermedium (Muhl.) D. C. 

 Eaton. Mt. Toby, etc. 



spinulosum (O. F. Miiller) Sw. var. dilitatum (Hoffm.) Hook. 

 Mt. Toby, A. \'. Osmun. 

 Cystopteris Bernhardi. Bladder Fern. 



bulbifera (L.) Bernh. Mt. Toby, Sunderland, etc. 



fragilis (L.) Bernh. Springfield, S. Stebbins ; Mt. Holyoke; Sun- 

 derland, etc. 

 Woodsia R. Brown. 



ilvensis (L.) R. Brown. 



obtusa (Spreng.) Torr. 

 Dicksonia L'Hdr. 



punctilobula (Michx.) Gray. Hay-scented Fern. 

 Onoclea L. 



sensibilis L. Sensitive Fern. 



Struthiopteris (L.) Hoffman. Ostrich fern. This fern in Mass. 

 attains its maximum development in the Conn, 

 valley reaching a height of 7 feet or more. 



SCHIZAEACEAE 

 Lygodium Swartz. Climbmg Fern. 

 palmatum (Bernh.) Sw. Local. 



OSMUNDACEAE 

 Osmunda [Tourn ] L. Flowering Fern. 

 regalis L. 

 Claytoniana L. 

 cinnamomea L. Cinnamon Fern. 



OPHIOGLOSSACEAE 

 Ophioglossum [Tourn.] L. Adder's Tongue. . 



vulgatum L. 

 Botrychium Swartz. Moonwort. 



simplex E. Hitchcock. Conway, F.. Hitchcock ; Plainfield, etc.. 

 Porter ; Mt. Toby. 



