16. 



OAK FERN 



Dryopteris dryopteris) 



Frond 5 to 15 Incnes long. 5 to 14 inches broad. Twice- 

 pinnate. Stipe green and about the same length as the 

 triangular blade. The three sections about equal in 

 length. Delicate. Sori near the margin and no indusia. 



In wet woods. Common. 



miDEHSAIR SPLEENWORT 



(Asplenium trichomanes) 



f»N.- 



Fronds 4 to 10 inches long and less than an inch wide. 

 Stipe and rachis shining and blackish. Pinnae round 

 or 0Tal» Sori in several pairs on back of each pinna. 

 Moist ledges,. Rare. 



