158 Bulletin 187 



POLYPODIUM. Polypody 



P. vulgare L. Rocks; common. Var. atteuuatum Milde. Brattleboro, 

 (Addie L. Reed). Var. auritum Willd. Mt. Horrid, (Button). Var. 

 cambricum (L.) Willd. Rutland, (Kirk) ; Montgomery, (Mary L. 

 Gates). 



POLYSTICHUM 



P. acrosticlioides (Michx.) Schott. (Aspidium acrostichoides Sw.). 

 Christmas Fern. Rocky woods; common. Var. iucisum Gray. 

 (Aspidium acrostichoides, var. incisum Gray; Polystichum acros- 

 tichoides, var. Schweinitzii Small). Rhod. 11: 35. Dry wooded hill- 

 sides; frequent. Crisped and crested forms occur. 



P. Braunii (Spenner) Fee. (Aspidium aculeatum, var. Braunii Doll.) . 

 Braun's Holly Fern. Moist woods above 1500 feet altitude; occa- 

 sional. 



PTERIS. (PTERIDIUM). Brake or Bracken 



P. aqullina L. Pastures and open woods; common. Var. pseudo- 

 caudata Clute. Burned over place, Colchester, (F. A. Ross). 



WOODSIA 



W. alpina (Bolton) S. F. Gray. (W. hyperborea R. Br.). Alpine 



Woodsia. Mt. Mansfield and Willoughby, (Pringle) ; Quechee Gulf, 



(Balch). 

 W. glabella R. Br. Smooth Woodsia. Willoughby Lake, (Torrey) ; 



Mt. Mansfield and Bakersfield Ledge, (Pringle) ; Quechee Gulf, 



(Balch); Mt. Horrid, Rochester, (Dutton). 

 W. ilvensis (L.) R. Br. Rusty Woodsia. Rocks; common. 

 W. obtusa (Spreng.) Torr. Blunt-lobed Woodsia. Rocky banks and 



calcareous ledges; occasional. In Connecticut Valley north to St. 



Johnsbury, 



WOODWARDIA. (ANCHISTEA). Chain Fern 

 W. virginica (L.) Sm. Virginia Chain Fern. Fort Ethan Allen pond, 



(Robbins) ; Franklin bog, (Wild); Rutland, (Kirk). 



OSMUNDACEAE. FLOWERING FERN FAMILY 



OSMUNDA. Flowering Fern 



0. ciimainomea L. Cinnamon Fern. Wet woods and pastures; com- 

 mon. Forma bipinnatifida Clute. Fern Bull. 15: 17. Williston, 

 (Blake). Forma frondosa, (T. & G.) Britton. With the type; occa- 

 sional. Forma iucisa (Huntington) Gilbert. With the type; occa- 

 sional. Forma latipinnula Blake. Rhod. 15:155. Swanton, (Blake). 

 A crisped form occurs. 



0. Claytoniana L. Interrupted Fern. Wet woods and pastures; com- 

 mon. Var. dubia Grout. Newfane, (Grout). 



0. regalis L. Royal Fern. Wet woods and swamps; common. Forma 

 iuterrupta Milde. Swanton, (Blake). Forma orbiculata Clute. 

 Hartland, (Ruggles). An incised form occurs. 



