DICRANACEAE 91 



like than other species and become much crisped when 

 dry. They are yellowish to dark green. 



Range, Newfoundland to Manitoba, south to West Vir- 

 ginia; Europe; Asia. 



Dicranum longifolium occurs on rocks and trees in 

 mountainous or hilly woods. The stems are usually 

 1-2 inches long and the leaves about }4 mc//, often longer; 

 curved and turned to one side; not much changed 

 when dry; light green, and glossy. 



Range, Nova Scotia to North Carolina, west to British 

 Columbia and Colorado; Greenland; Europe; Asia. 



Dicranum viride is found on decaying logs as well as 

 on living trees. It is a small species, usually not more 

 than I inch high. The leaves are yellowish to dark 

 green, spreading when moist, a Kttle crisped when dry 

 and the tips are usually broken of, which is the dis- 

 tinguishing characteristic, but not always easily seen 

 without a lens. 



Range, Newfoundland to the Rocky Mountains, south 

 to Pennsylvania and Ohio. 



b. Capside not erect 

 I. Seta solitary 



Dicranum scoparium (L.) Hedw. (Plate V, Fig. 4) is 

 by far the most common species and is very variable. 

 It grows on soil, rocks, or decaying wood in dry or 



