56 



the; AMERICAN BOTaNIST. 



Figure 2 h represents a form in which the fronds are 

 narrow lanceolate and the pinnte short, blunt and round- 

 ed. Figure 2 a is the opposite 

 form. The Ironds are broad 

 and the pinnae long and taper- 

 ing to an acute point. 



Figure 3 is the most re- 

 markable variety of all those 

 observed this fall. It might 

 . be called variety "auritum" on 

 account ot the conspicuous 

 "ears," the lower pinnae are 



Fig. 3. 



decorated with. Not only 

 the lowest pair, but often 

 several other pairs above 

 have these remarkable ears^ 

 The outline of these fronds 

 is broadly triangular, not 

 lanceolate, with a remark- 

 ably long apex. They do 

 Fig. 2. not grow on the top of ex- 



posed ledges as does the t3'pe, but on low rocks in shady, 

 rather moist and moss grown situations. 



Finally we have the variety figured in figure 4. They 



