MOSELEY. 37 



0. STRUTHioPTERis, Hoffman. 



Vermillion River bottoms, frequent. 



OSMUNDA, L. 



O. ciNNAMOMEA, L. Cinnamon Fern. 



Infrequent; Florence, Milan "Perkins." 



O. CLAYTONIANA, L. 



Common in moist woods. Not on Peninsula or 

 Islands. 

 O. REGALis, L. Flowering Fern. 

 Infrequent in wet woods. 



PELL/EA, Link, Cliff Brake. 



P. ATROPURPUREA, Link. 



Sandstone quarry, Furnace woods, Vermillion ; 

 on limestone, Margaretta, Peninsula, Catawba, 

 Kelley's Island, Put-in-Bfiy. 



PHEQOPTERIS, Fee, Beech Fern. 

 P. HEXAGONOPTERA, Fee. 



Frequent from the Huron river east. 



POLYPODIUn, L., Polypody. 

 P. VULGARE, L. 



Rocky banks of rivers and Kelley's Island; 

 scarce. 



PTERIS, L. 



P. AQUiLiNA, L., Common Brake. 

 Frequent. 



EQUISETACE/E. 



EQUISETUn, L., Horsetail. 

 E. ARVENSE, L. 



Common but not observed on the Islands, except 

 Kelley's. 



