Mosses and Lichens 



G. pellucida. Cross section 

 of four teeth to show that 

 they were formed by the 

 splitting of a solid mass. 



With veil. With lid. 

 G. pellucida. Spore-case. 



G. Brovmii. 

 Prondiform leaves 



G. pellucida. 

 Branch with 

 gemmae cluster. 



G. pellucida. 

 Gemma. 



G. pellucida. 

 Side view of gemma cup. 



G. pellucida. 

 Bract from gemma cup. 



Spore-case 



Tip of spore-case, with teeth. 

 G. pellucida. Lid. G. pellucida. Veil. G. pellucida. Tooth. G, pellucida. 



194 



