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BRITISH MOSSES. 



5. Plants with the lower portion of the peristome united into a tube. 

 Fig. 21. Tortula subulata. 

 Awl-leaved Screw Moss (a) . 



Colour. Dark green. 

 Stems. Short, tufted. 



Leaves (b) . Oblong-ovate ; nerve in long- point. 



Flowers and Fruit. Monoicous. Capsule large and long, cylindrical. Summer. 

 Locality. Hedge banks. 



Variety. Subinerucis . — Leaves crowded; point, hardly any; capsule short. 



6. Plants taller, branched. 

 Fig. 22. Tortula latipolia. 

 Wide-leaved Screw Moss (a) . 



Colour. Yellow green. 

 Stems. In patches. 



Leaves (b) . Spreading*, recurved, crisped when dry ; nerve hardly excurrent. 

 Floivers and Fruit. Dioicous. Capsule oblique, small ; very rare. Summer. 

 Locality. About trees and in damp places. 



Fig. 23. Tortula l^dvipila. 



Small Hairy Screw Moss (a) . 



Colour. Dark, with emerald green tips. 

 Stems. Tufted. 



Leaves (b) . Spreading, ovate-oblong ; nerve running into a long white point. 

 Flowers and Fruit. Monoicous ; capsule curved, cylindrical ; peristome almost 



wholly tubular. Summer. 

 Locality. Trees and rocks. 



Fig. 24. Tortula ruralis. 



Great Hairy Screiv Moss (a) . 



Colour. Dark, tipped with yellow green. 

 Stems. Long and branched ; tufted. 



