j o Polypodiaceae 



pinnae lanceolate, acuminate, 4-8 inches long; 

 pinnules lanceolate, incised or serrate, sori 

 short, the indusia straight or variously 

 curved. 



In moist woods and thickets throughout 

 the region but especially in the Selkirks, 

 being a common fern in the woods in the 

 vicinity of Glacier. 



Polystichum Rootstock short, stout, and 

 Lonchitis densely chaffy ; stems 1-5 inches 

 (L.) Roth. long, bearing large dark-brown 

 Holly Fern. ^\ e $, with some smaller ones; 

 leaves rigid, leathery, and evergreen, nar- 

 rowly lanceolate in outline, once pinnate; 

 pinnae broadly lanceolate, scythe-shaped, 

 1-2 inches long, acute or acuminate at the 

 apex, with an ear-like projection on the 

 upper side at the base, and with a nearly 

 straight edge on the lower, densely spiny- 

 toothed ; sori large, nearer the margin than 

 the midrib. 



In large tufts among rocks throughout 

 the region. 



