11. 



CHRISTMAS PERN 



(Polystichum acrosticholdes) 



Frond 1 to Zi feet long - in cl-ump at end of rootstock. 

 Stipes covered by light brown scales. Blade lanceolate. 

 Lov/er pinnae winged and attached alternately to the 

 rachis by short stalks . The fertile frond longer than 

 the sterile. The upper pinnae much contracted and bear- 

 ing the sori. Evergreen. 



In moist woods. Common. 



NEW YORK FERN 



(Dryopteris noveboracensis) 



Fronds 1 to 2i teat, long. Creeping rqotstock. Pinnate 

 blade tapering both ways fi«om the middle. The lower 

 pinnae very small, Sori near the margin. 

 Moist woods. Common* 



