318 CHECKLIST OF THE FERNS. 
SCHIZASA J. E. Smith, 
67. Schizea pusilla Pursh, 
SCOLOPENDRIUM Adans. 
68. Scolopendrium vulgare J. E. Smith. 
Scolopendrium Scolopendrium Karst, 
Phyllitis Scolopendrium Newman. 
STRUTHIOPTERIS Willd. 
69. Struthiopteris Germanica Willd. 
Onoclea Struthtopterds Hoffm. 
Matteuccta Struthiopter’s Todaro. 
Struthiopterts Germanica Pennsylvanica Lawson. 
TRICHOMANES L.. 
70. Trichomanes Petersii A. Gray. 
71, Trichomanes radicans Sw. 
WOODSIA R. Br, 
72. Woodsia glabella R. Br. 
73. Woodsia hyperborea R. Br. 
Woodsta alpina S. F. Gray. 
74. Woodsia Ilvensis R. Br. 
75. Woodsia obtusa Torr. 
Woodsia obtusa f. glandilosa D. C. Eaton. 
76. Woodsia Oregana D. C. Eaton. 
77. Woodsia scopulina D. C. Eaton. 
WOODWARDIA J. E. Smith. 
78. Woodwardia angustifolia J. E. Smith. 
Woodwardta areolata Moore. 
79. Woodwardia Virginica J, E. Smith. 
