12, 



IIARSH SHIELD-FERN 



(Dryopterls thelypteris) 



Fronds 1 to 2-^ feet long from creeping rootstock. Pinnate. 

 Stipes long, bluish-green. Blade usually broadest at base. 

 Fertile blade taller and sori covered by the turned under 

 margin of pinnules. 



Marshes. Common, 



CRESTED SHIELD-FERN 



(Dryopterls cristata) 



Fronds li to 2-^ feet long and 3 to 5 inches broad. Stipes 

 covered with light brown scales. Fertile fronds erect, 

 taller and more narrow than the sterile. Lower pinnae 

 wedge-shaped, Sori large and covered by kidney-shaped 

 Indus ia. Sterile fronds evergreen. 



V/et woods. Hot common. 



