10. 



HAY-SCSNTED FERN 



(Dennstaedtia punctilobula) 



Fronds. 1 to 3 feet long. Twioe-pinnate. Creeping 

 rootstock. Stipes smooth aM chestnut hrovra. Rachis 

 and Tinder iatirface of blade minutely hairy. Sori small, 

 round, usually one at base of each segment. Blade sword- 

 shaped, Fragrajit when crushed. 



Rocky woods and hillsides. Common. 



BRITTLE FERN 



(Filix fragilis) 



Frond 8 to 15 inches long. Creeping rootstock. Blade 

 lanceolate. 2 to 3 times pinnate. Pinnae rather widely 

 separated. Sori roundish, near the margin, Rachis 

 usually winged. 



On rocks in moist woods. Rare. 



