BEITISH MOSSES. 



Cal. 



FIG. 2. Polytrichum : an 

 Acrocarpous Moss Female 

 Plant, after Dillenius. ar. 

 Position of archegone. 

 *. Seta. a. Capsule and ap- 

 pendages, c and c 1 . Capsule. 

 o. Operculum. cal. Calyptra. 



