An Ecological Study of Buckeye Lake. 107 



Hypnaceae. 



Ambh'stegium varium (L.) Hechv. On ground, wooded zone, 

 Cranberry Island. 



A. riparium (Hedw.) B. S. Margin of small pools in wooded 

 border of Cranberry Island. 



A. kochii B. S. On ground, forest zone, northeast side of Cran- 

 berry Island. 



Brachytheciaceae. 



Brachythecium plumosum (Sw.) On the ground, wooded zone 

 Cranberry Island ; and Nelumbo-Polygonum society, Orchard 

 Island. 



PTERIDOPHYTA 



Filiccs 

 Osmundaceae. 



Osmunda regalis L. Generally distributed throughout the thicket 

 and forest zones, also quite frequent in the bog-meadow, 

 Cranberry Island. Occurs also on two smaller islands 

 towards the northeast. 



O. cinnamomea L. Generally distributed throughout Cranberry 

 and the two small similar islands. The largest and most 

 abundant fern. 



Polypodiaceae. 



Adiantum pedatum L. Forest, Rabbit Island. Not abundant. 



Dryopteris thelypteris (L.) A. Gr. Generally distributed through- 

 out the thicket and forest zones and frequent in the bog- 

 meadow, covering appreciable areas in the southwestern 

 portion. Cranberry Island and also other islands. 



D. cristata (L.) A. Gr. Quite generally distributed throughout 

 the thicket and forest zones. Cranberry and other islands. 



D. spinulosa (Retz.) Kuntze. In well shaded situations of the- 

 forest zone, Cranberry Island. 



