THE POLYTRICHACE^ OF WESTERN NORTH AMERICA 



323 



bocon 



Fig. 27. Polytrichum juniperinum. 



1 = Dry plant with capsule, X i. 2 = Moist antheridial plant; d = antheridial 

 disk, X I. 3 = Immature capsule with calyptra, X 5- 4 = Capsule, X 5. 5 = 

 Peristome, X 150. 6 = Leaf showing incurved margin and lamellae on upper side, 

 X 15. 7 = Leaf tip, X 65. 8 = Cross section of leaf, X 65. 9 = Cross section of 

 a few lamelhe showing smooth flask-shaped marginal cells, X 250. 



