186 FLORA OF MOUNT DESERT. 



Var. dilatatum (Hoffm.), Hook. 



Woods; infrequent. Breakneck road (Clara L. Walley) ; — 

 west of Southwest Harbor (M. L. Fernald). A dwarf form in 

 woods, Breakneck road (Clara L. Walley). 



A. cristatum (L.), Swz. 



Wet ground; frequent. 

 Var. Clintonianum, D. C. Eaton. 



Eare. Near Breakneck road (Clara L. Walley). 

 A. marginale (L.), Swz. 



Kocky woods ; frequent. 

 A. acrostichoides (Mx.), Swz. Christmas Fern. 



Deep rocky woods; frequent. 



CYSTOPTERIS, Bernh. Bladder Fern. 



C. fragilis (L.), Bernh. 



Rare. Caves, Barr Hill (Redfield) ; — wet cliffs, West Branch 

 of Hadlock Brook (Rand). 



ONOCLEA, L. Sensitive Fern. 



0. sensibilis, L. 



Common in low ground. 



WOODSIA, R. Br. 



"W. Ilvensis (L.), R. Br. 



Infrequent and local. Dog Mt. (Rand); — Flying Mt. (An- 

 nie S. Downs, H. C. Jones, and others); — Beech Cliff (Annie 

 S. Downs, R. & R.). 



DICKSONIA, L'Her. 



D. pilosiuscula, Willd. D. punctilobula (M.X.), Gray. 

 Common everywhere. 



