MOSELEV. 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-Bay. 



PHEGOPTERIS, Fee, Beech Fern. 



P, HEXAGONOPTERA, Fee. 



Frequent from the Huron river east. 



POLYPODIUH, L., Polypody. 

 P. YULGARE, L. 



Rocky banks of rivers and Kelley's Island; 

 scarce. 



PTERIS, L. 



P. aquilina, L., Common Brake. 

 Frequent. 



EQUISETACE/E. 



EQUISETUH, L M Horsetail. 

 E. ARVENSE, L. 



Common but not observed on the Islands, except 

 Kelley's. 



