EXPLANATION OF THE PLATES. 107 



Leaves (5) . Spreading, recurved, obtuse ; the points very long ; margin 

 recurved. 



Flowers 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. 



Intermedia te Screw Moss (a) . 



Colour. Dark green. 

 Stents. Long, branched. 



Leaves (b) . Oblong, obtuse ; with a long hair point. 



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

 Locality. On walls. 



Fig. 27. Tortula mulleri. 

 Brown Screw Moss (a) . 



Colour. Light brown. 



Stems. Long, covered with roots. 



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

 Flowers and Fruit. Synoicous ; capsule curved. Spring. 

 Locality. Rocks in Scotland. 



Fig. 28. Tortula paptllosa. 



Rough-leaved Screw Moss (a) . 



Colour. Very dark green. 

 Steins. Short, tufted. 



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



bark with glands \fajpillob) ; margin turned in; nerve thick. 

 Inflorescence not known. 

 Locality. On trees. 



