THE MOSSES, FUNGI, AND LICHENS. 



301 



is taken off, the first thing seen is the peristome, 

 which consists of a number of teeth-like edges, 

 which have always a constant number, as four, eight, 

 sixteen, or twenty-four. The forms of these teeth 



Fig. 235. 



Fig. 236. 



CncuJlate inflated Calyptra 

 of Fu 



Fig. 237. 



Cut-dilate conic Calyptra 

 of Fissidens. 



Fig. 238. 



Fruit of Splachnum ampul- 

 laceum with small conic 

 Lid, cylindric Capsule, and 

 obovate Apophysis. 



Strumose Capsule ot Dicra- 

 nu/n starkii, with rostrate 

 Lid and Annulus. 



are exceedingly various, and therefore if attention 

 be paid to them, they afford extra means of identify- 

 ing the numerous species of mosses. One group 

 of mosses have no teeth, and these go by the name 

 ol the " naked-mouthed " mosses ( 



