158 BRITISH MOSSES. 



Fig. 18. Beyum aegenteum. 



Silver Thread Moss (a) . 

 Colour. Silvery green. 



Stems. Very slenderj branched, tufted. 



Leaves (b) . Imbricatedj 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. 



Pie. 19. Betum Tiebii. 



Tierian Thread Moss (a) . 

 Colour. Brown red. 



Stems. Very slender, with innovations. 



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



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



rounded (^i66oms), neck very long, mouth oblique. Autumn. 



Locality. Crevices of rocks. 



Fig. 20. Beyum demissitm. 



Club-fruited Thread Moss (a) . 

 Colour. Yellow green. 



Stems. Short, tufted, branched. 



Leaves (6) . Ovate-acuminate, margin recurved. 



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



oblique. Autumn. 



Locality. Crevices of rocks in Scotland. 



F. Leaves large arid broad., like Mnium. 



Fig. 21. Beyum Tozeeii. 



Mr. Tozer's Thread Moss (a) . 



Colour. Pale green ; stem red. 

 Stems. Short, in patches. 



