66 HOW TO KNOW THE MOSSES 



b. Capsule short-cylindrical (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 bipinnately or tripinnately branched .... 68. 

 Stems irregularly branched^ .... 75, 79. 

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

 see if the leaves are straight or curved, the entire 

 outline need not show.) , 

 Stems pinnately branched. 

 Leaves straight .... 66, 67, 68, 69. 

 Leaves curved .... 62, 66. 

 Stems bipinnately or tripinnately branched; leaves 



straight .... 68. 

 Stems irregularly branched. 

 Leaves turned to one side, curved .... 62. 

 Leaves arranged equally around stem, straight. 

 Leaves wide-spreading . . . . 67, 75, 78. 

 Leaves not wide-spreading ^ . . . . 75, 79. 



Plants growing on roots or trunks of trees 



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 or pinnately branched ^ 



50, 51. 52, 53, 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) ; stems irregularly or pinnately branched. 



^ If No. 34 has been mistaken for a pleurocarpous moss, it will apparently 

 belong here. 



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

 belong here. 



