CAPSULE KEY TO GENERA 



A. Fruit at the apex of the stem or of a well developed 

 branch, sometimes appearing lateral by the new growth 

 of the plant. Stems generally erect, and often not 

 branched; or if slightly branched by forking, usually 

 with not more than two or three branches.^ Acrocar- 

 pous Mosses, p. 77. 



B. Fruit on the side of the stem or on a very short lateral 

 branch. Stems prostrate or ascending, rarely erect, 

 usually much branched (with more than two or three 

 branches^) Pleurocarpous Mosses, p. 172. 



Note. When in doubt where to place a moss that is somewhat 

 branched, try it under both Division A and Division B. 



A 



{Fissidens, p. 97, with fruit both terminal and lateral may be found here) 



Plants growing on the ground 



I. CAPSULE ERECT 

 a. Capsule cylindrical 



Shape of leaves when moist not easily seen. (Leaves too 

 small or too closely folded to show if they are rela- 

 tively long and narrow or short and broad) .... 



2, 15, s^, 40. 



^ For arrangement of branches sec "Illustrations of Terms," Plate II. 



