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BRITISH MOSSES. 



Fig. 18. Beyum aegenteum. 

 Silver Thread Moss (a) . 



Colour. Silvery green. 



Stems. Very slender, branched, tufted. 



Leaves (b) . Imbricated, ovate, apiculate ; nerve ceasing below the apex, not 

 serrated. 



Flowers and Fruit. Dioicous ; seta slender, curved above ; capsule oval, neck 



not tapering. Autumn. 

 Locality. On the ground, &c. Very common. 



Fig. 19. Beyum Tieeii. 



Tierian Thread Moss (a) . 



Colour. Brown red. 



Stems. Very slender, with innovations. 



Leaves (6) . Roundish ovate ; areolae large, apex recurved. 



Flowers and Fruit. Dioicous. Capsule very large, curved inwards, upper side 



rounded (gibbous), neck very long, mouth oblique. Autumn. 

 Locality. Crevices of rocks. 



Fig. 20. Beyum demissum. 

 Club-fruited Thread Moss (a) . 



Colour. Yellow green. 



Stems. Short, tufted, branched. 



Leaves (b) . Ovate-acuminate, margin recurved. 



Floivers and Fruit. Dioicous. Seta arched ; capsule curved, gibbous, mouth 



oblique. Autumn. 

 Locality. Crevices of rocks in Scotland. 



F. Leaves large and broad, like Mnvum. 

 Fig. 21. Beyum Tozeeii. 

 Mr. Tozer's Thread Moss (a) . 

 Colour. Pale green; stem red. 

 Stems. Short, in patches. 



