EXPLANATION OF THE PLATES. 107 



Leaves (b) . Spreading, recurved, obtuse ; the points very long ; margin 



recurved. 

 Mowers and Fruit. Dioicous ; capsule long and curved ; lid with long beak. 



Spring. 

 Locality. On walls and roofs ; abundant. 



Fig. 25. Variety found on sand-hills. 



Colour, brown and yellow green; stems, much longer ; leaves very large, hair- 

 point almost as long as the leaf; capsule curved. 



Fig. 26. Tortula intermedia. 



Intermediate Screw Moss (a) . 

 Colour. Dark green. 



Stems. Long, branched. 



Leaves {h) . Oblong, obtuse ; with a long hair point. 



Flowers and Fruit. Dioicous (?) ; capsule curved ; lid subulate. Spring. 



Locality. On walls. 



Fig. 27. Toetula mulleki. 



Brown Screw Moss (a) . 

 Colour. Light brown. 



Stems. Long, covered with roots. 



Leaves (b) . Thick in texture, growing in tufts round the stem, spreading, oval. 



Ftowers and Fruit. Synoicous ; capsule curved. Spring. 



Locality. Rocks in Scotland. 



Pig. 28. Toetitla papillosa. 



Rough-leaved Screiv Moss (a) . 



Colour. Very dark green. 



Stems. Short, tufted. 



Leaves (b) . Spreading, oval, concave, hair-pointed ; covered on the nerve and 



bark with glands [fapilloi); margin turned in; nerve thick. 

 Inflorescence not known. 

 Locality. On trees. 



