254 MINNESOTA BOTANICAL STUDIES. 



Common throughout the state in moist shaded places. 



Herb. : A large collection. 

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



Common in damp low woods and meadows throughout th 5| 

 state. 



Herb. : Many specimens. 



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

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

 Onoclea struthiopleris (L.) HOFFM. Deutsch. Fl. 2: n 



1795. 



Throughout the state in moist woods and thickets. 

 Herb. : Well represented by specimens. 



Woodsia ilvensis (L.) R. BR. Trans. Linn. Soc. n : 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 ; Sheldor 

 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. i86c 



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 (Micnx.) MOORE, Index Fil. 97 : 

 307. 1857-62. Hay-scented fern. 



