The Sub-genus Hylocomnium 



double to the middle; margin closely toothed; base auriculate; 

 cells of the basal angles wide, transparent, oblong six-sided. 

 Branch-leaves narrower, and gradually smaller upward. 



Habit of flowering. Male and female flowers on separata 

 plants (dioicous). 



Veil (calyptra*). Split up one side. 



Leaf at base of 



pedicel. 



Stem leaves. 

 H. triqtutrum. 



Apex of leaf. 



Spore-case. Oblong, horizontal or inclined by a curve of its 

 pedicel under the base, narrowed at the mouth when dry. 



Pedicel (seta). Curved below the spore-case, i to i inches 

 high. 



Base of leaf. 



(a) Spore-case with veil; 

 (6) Spore-case with lid. 



H. trigtutrvm. 

 IM 



