302 



FRYE 



Fig. 15. Pogonatum alpinum. 



1 = Plant dry, X i. 2 = Moist plant with capsule, X i. 3 = Capsule, X 5 

 4 = Peristome, X 150. 5 = Leaf with sheathing base and lamelhc on upper side, 

 X 15. 6 = Leaf tip, X 65. 7 = Cross section of leaf showing lamelL-c and margin, 

 X 65. 8 = Cross section of a few lamellai showing thickened and papillose marginal 

 cells, X 250. 



