124 Annai.s (M- THI-, Carxkcjik Musklim. 



ATHYRIUM Roth. 

 ASPLENJUM Linnjeus. 

 ^ A. pinnatifidum (Nuttall). Pinnatifid spleenwort. 



'•= A. Trichomanes (Linnaeus). Maiden-hair spleenwort. 



-'= A. platyneuron (Linnajus). Ebony spleenwort. 

 A. chenettm Alton. 



ij A. montanum fWilldenow). Mountain spleenwort. 



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



'!= A. acrostichoides (Swartz). Silvery spleenwort. 

 A. fhelyptcroidcs Michaux. 



* A. Filix-foemina ( 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, 1886. 



DRYOPTERIS Adanson. 

 ASPIDIUM Swartz. 

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



'i' D. Noveboracensis (Linnneus). New York fern. 



'■■- D. spinulosa intermedia (Muhlenberg). Wood fern. 



