124 Annals of the Carnk.gie Museum. 



ATHYRIUM Roth. 

 ASPLENIUM Linnceus. 

 ^ A. pinnatifidum (Nuttall). Pinnatifid spleenwort. 



* A. Trichomanes (Linnaeus). Maiden-hair spleenwort. 



* A. platyneuron (Linnaeus). Ebony spleenwort. 

 A. ebeueiim Aiton. 



§ A. montanum (Willdenow). Mountain spleenwort. 



* A. angustifolium (Michaux). Narrow-leaved spleenwort. 



* A. acrostichoides (Swartz). Silvery spleenwort. 

 A. thelypteroides Michaux. 



* A. Filix-fcemina (Linnaeus). Lady-fern. 



CAMPTOSORUS Link. 



* C. rhizophyllus (Linnaeus). Walking-fern. 



PHEGOPTERIS Fee. 



* P. hexagonoptera (Michaux). Broad beech-fern. 



* P. Dryopteris (Linnaeus). Oak-fern. 



Robinson Township, branch of Montour's Run, June i, i< 



DRYOPTERIS Adanson. 

 ASPIDIUM Swartz. 



* D. Thelypteris (Linnaeus). Marsh shield-fern. 



* D. Noveboracensis (Linnaeus). New York fern. 



* D. spinulosa intermedia (Muhlenberg). Wood fern. 



