THE POLYTRICHACE^ OF WESTERN NORTH AMERICA 



289 



— On soil.— Port Clarence, and near Nome, Alaska; St. Paul and 

 St. Matthew islands in Bering Sea, Alaska; Klondike River in 

 Yukon Territory; Labrador; Greenland; Scandinavian Peninsula; 

 Siberia. 



Fig. 9. Psilopilum glabratum. 



1 = Dry plant, X i. 2 = Moist plant with capsule, X i. 3 = Capsule, X S- 

 4 = Peristome, X 150. 5 = Leaf showing incurved margins and lamellae on upper 

 side, X 15. 6 = Leaf-tip, muticous, keeled, X 65. 7 = Cross section of leaf, X 65. 

 8 = Cross section of a few lamellre, X 250. 



BARTRAMIOPSIS Kindb. 



Bartramia is another genus of mosses, opsis = looking like; hence 

 looking like Bartramia. 



Plants dioicous, blackish-green to brown. Stems slender, 2—8 

 cm. high, simple or dichotomous above, with rhizoids at base. 



