64 HOW TO KNOW THE MOSSES 



b. Capsule shorUcylindrical (less than four times longer 

 than broad) 



Leaves when moist not easily seen (too small or too 

 closely folded to show if they are straight or 

 curved); stems irregularly branched .... 79. 



Leaves when moist easily seen (it is necessary only to see 

 if the leaves are straight or curved, the entire out- 

 line need not show); stems irregularly branched. 

 Leaves straight, erect or spreading .... 



65, 75, 77, 79- 

 Leaves more or less curved and turned to one side 



.... 65. 



Plants growing on rocks not in streams, ponds, or 

 water-holes 



I. CAPSULE ERECT 



Leaves when moist not easily seen (too small or too 

 closely folded to show if they are straight or 

 curved) ; stems irregularly branched ^ . . . . 



50, 53, 54, 55, 56. 



Leaves when moist easily seen. (It is necessary only to 



see if the leaves are straight or curved, the entire 



outline need not show.) 



Capsule partly concealed by leaves ; - stems irregularly 



branched; leaves straight .... 42. 

 Capsule not concealed. 



Stems irregularly branched. 

 Leaves apparently on two opposite sides of stem, 

 straight 48, 55. 



^ If No. 21 has been mistaken for a pleurocarpous moss, it will apparently 

 belong here. 



* If No. 19 has been mistaken for a pleurocarpous moss, it will apparently 

 belong here. 



