Leafy Mosses 



Spore -case 

 with lid re- 

 moved to show 



Portion of single row of 



peristome. teeth. 



Neckera pennata. 



Gymnostomum cal- 

 careum. Spore-case 

 without teeth. 



Hypnum uncinatum. Por- 

 tion of peristome to show 

 cilia and teeth of the inner 

 membrane and one tooth 

 of outer membrane with 

 annulus at the base. 



teeth may vary greatly in shape and num- 

 ber; as a rule, there are four, sixteen, thirty- 

 two, or sixty-four. 



The spore-case when immature is often 

 covered by a cap or veil (calyptra). The veils vary in shape 

 and in size, sometimes persisting a long time, sometimes falling 

 away in the early stages. 



All leafy mosses have 

 leaves which may vary 

 in size, in shape, in 



Funaria hygrometrica. Spore- 

 cases borne on pedicels grow- 

 ing at the summit of stem. 



Thuidium 

 delicatulum 

 Spore - case 

 sho wi ng 

 two rows 

 of teeth. 



Brachythecium rivulare. Spore-case borne on a 

 pedicel growing from the side of the stem. 



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