326 



FRYE 



the capsule. Lid hemispheric, with short beak. Pedicel 8-12 cm. 

 long. St. Paul Island, Bering Sea; Lake Lindeman, Yukon, Brit- 

 ish America; Labrador; Greenland; northern Europe and the Alps; 

 Siberia. 



Fig. 29. Polytrichum hyperboreum. 



1 = Moist plant, XL 2 = Dry plant, XL 3 = Capsule, X $. 4 = Peristome, 

 X 150. 5 = Leaf showing lamellae and involute margin, X 15. 6 = Leaf tip, X 65 . 

 7 = Cross section of leaf, X 65. 8 = Cross section of a few lamellae. 



