254 < MINNESOTA BOTANICAL STUDIES. 



Common throughout the state in moist shaded places. 

 Herb. : A large collection. 



Onoclea sensibilis L. Sp. PI. 1062. 1753. Sensitive fern. 



Common in damp low woods and meadows throughout the 

 state. 



Herb. : Many specimens. 



Matteuccia struthiopteris (L.) Todaro, Synops. Plantar. Acotyl. 



Vascul. in Sicilia sponte cresc. 30. 1866. Ostrich fern. 



Onoclea struthiopteris (L.) Hoffm. Deutsch. Fl. 2: 11. 



!795- 

 Throughout the state in moist woods and thickets. 

 Herb. : Well represented by specimens. 



Woodsia ilvensis (L.) R. Br. Trans. Linn. Soc. 11 : 173. 

 1812. Rusty woodsia. 



Occurring quite commonly on rocks in northern Minnesota 

 and infrequently in the central portion of the state. 



Herb.: Taylor, St. Croix Falls, Taylors Falls; Sheldon, 

 Taylors Falls, New Ulm ; Bailey, Vermilion lake, Agate 

 bay ; Juni, Beaver bay ; MacMillan and Sheldon, Lake of the 

 Woods ; Holzinger, Winona. 



Woodsia glabella R. Br. App. Franklin's Journ. 754. 1823. 

 Smooth woodsia. 



Reported by Upham as occurring at Stillwater, but there are 

 no specimens in the herbarium to verify the report. 



Woodsia scopulina D. C. Eaton, Can. Nat. 2: 90. 1865. 

 Rocky Mountain woodsia. 



Only known to occur in the southern portion of the state. In 

 dry situations. 



Herb. : Wheeler, Luverne ; Rosendahl, Spring Grove. 



Woodsia oregana D. C. Eaton, Can. Nat. 2: 90. 1865. 

 Oregon woodsia. 

 Found at Stillwater according to Upham. Rare. 

 Herb. : Lyon, Jefferson, Houston county. 

 Woodsia obtusa (Spreng.) Torr. Cat. PI. in Geol. Rep. N. 

 Y. 195. 1840. Blunt-lobed woodsia. 

 On rocks, infrequent or rare. 



Herb. : Rosendahl, Spring Grove ; Nelson, Vasa. 

 ^ Dennstaedtia punctilobula (Michx.) Moore, Index Fil. 97: 

 307. 1857-62. Hay-scented fern. 



