94 HOW TO KNOW THE MOSSES 



thickly covered with brown or whitish radicles. The 

 wavy leaves (Plate V, Fig. 5a) are very long, glossy, and 

 bright yellow-green; wide-spreading or slightly turned to 

 one side, the uppermost erect; not much altered when 

 dry. Catharinaea undulata (p. 157) also has wavy 

 leaves, but they become very crisped when dry, and 

 the stems are not covered with radicles. 



Dicranum Drummondii C. Mlill. has clustered setae 

 and is found in locahties with D. undulatum, but less 

 frequently. It may be easily distinguished from the 

 latter by the leaves, which are never wavy and become 

 crisped when dry. 



Range, northern United States, south to New Jersey and 

 Colorado. 



There is one other Dicranum with clustered setae, but 

 it is very rarely found. Dicranum majus Smith. This 

 species occurs in the mountains and again along the 

 coast in the northern part of our range. The stems are 

 long as in the two preceding species and the leaves are 

 very long, usually regularly turned to one side; light to 

 dark green, and glossy; not wavy, and not crisped when 

 dry. The stems are only slightly covered with radicles 

 in the lower part. 



Range, Greenland to Maine; Alaska; Europe; Asia. 



