DICRANACEAE 89 



a. Capsule erect 



Dicranum fulvum Hook. (Plate V, Fig. i) is a com- 

 mon species growing only on rocks. The plants are 

 medium in size, dark green above, dark brown below. 

 The lower part of the stems is often covered with radi- 

 cles. The leaves are more or less turned to one side; 

 somew^hat crisped when dry; usually rather dark green. 

 The fruit matures in autumn. 



Range, Nova Scotia to Wisconsin, south to North Caro- 

 lina and Missouri; Europe. 



When this species is not fruited it somewhat resem- 

 bles certain forms of D. scoparium (p. 91), which also 

 grows on rocks. Typical plants of D. scoparium are 

 taller and the leaves are more turned to one side, not 

 changing much when dry. When the plants are fruited, 

 they are easily distinguished by the position of the 

 capsule. See also D. fuscescens (p. 93). 



Dicranum flagellare Hedw. (Plate V, Fig. 2) is tisu- 

 ally found on old logs and stumps in moist woods. It is 

 a common species, generally fruiting freely, maturing 

 in summer. 



Range, Nova Scotia to North Carolina; Mexico; Europe; 

 Asia. 



A small species with stems about i inch long, the 

 lower part covered with felt-like tomentum, or radicles. 

 The leaves are somewhat curved and turned to one 

 side; usually crisped when dry; bright or yellowish- 



