250 



MINNESOTA BOTANICAL STUDIES. 



Osmunda cinnamomea L. Sp. PL 1066. 1753. Cinnamon 

 fern. 



Range about the same as that of the royal fern but occurring 

 less frequently. 



Herb. : Sandberg, Hennepin county ; Aiton, Minneapolis ; 

 Ballard, Stony Brook and Upper Gull lake; Sheldon, Garrison 

 and Mille Lacs reservation. 



Family POLYPODIACE.E. 



PolypodiumvulgareL.Sp.Pl. 1085. I 753- Common poly- 

 pody. 



Frequent throughout the state on rocks and rocky hillsides. 

 Herb. : Many specimens. 



Adiantum pedatum L. Sp. PI. 1095. 1753. Maiden-hair fern. 

 Common throughout the state in woods and shaded ravines. 

 Herb. : Collections from all parts of the state. 

 Pteridium aquilinum(L.) KUHN ; Decken's Reisen 3:11. 1879. 



Brake. Bracken. 



Pteris aquilina L. Sp. PI. 1075. 1753. 

 Common throughout the state in open woods and brush-cov- 

 ered areas. 



Herb. : Many specimens from scattered localities. 



Cheilanthes Feei MOORE, Ind. Fil. 38. 1857. Slender lip- 

 fern. 

 Cheilanthes gracilis (FEE) METT. Abh. Senck. Nat. Ge- 



sell. 3 : (reprint 36). 1859. 

 Rare. Dry cliffs. 

 Herb. : Lyon 299, Houston county. 

 Cryptogramma stelleri (GMEL.) PRANTL; Engler's Bot. Jahr. 



3: 413. 1882. Slender cliff-brake. 



Pellaa stelleri (GMEL.) WATT, Con. Fil. no. 2. 1869-70. 

 Infrequent or rare. Occurring usually on moist limestone 

 ledges. 



Herb. : Anderson, Featherstone ; Leiberg, Minneopa Falls ; 

 Lyon, Houston county; Sandberg and Holzinger, Winona ; 

 Rosendahl, Spring Grove ; Lyon, Hastings. 

 Pellaea atropurpurea (L.) LINK, Fil. Hort. Berol. 59. 1841. 



Purple-stemmed cliff-brake. 



Locally common but localities infrequent. Seeming to pre- 

 fer exposed limestone cliffs. 



