EXPLANATION OF THE PLATES. 



187 



Leaves (b) . Imbricated ; ovate-apiculate, serrate above, margins plane, two- 

 nerved at the base. 



Flowers and Fruit. Dioicous j capsule large, oblong; lid conical. Winter. 

 Locality. Very common in mountain districts. 



ISOTHECIUM. 



Capsule erect or inclined ; seta long ; peristome double ; outer of sixteen teeth, 

 marked with a line down the middle ; inner a membrane divided half way into six- 

 teen processes, with cilia between them. 



Fig. 4. Isothecium myurum. 

 Blunt-leaved Tree Moss (a) . 



Colour. Yellow green. 



Stems. Two inches high, with stolons near the base, branches fasciculate ; 

 incurved. 



Leaves (b) . Ovate-oblong ; serrate above, margin recurved below ; nerve ceasing 



half way ; those of the perichastium erect. 

 Flowers and Fruit. Dioicous; capsule oval, erect, or nearly so, beak rostrate; 



seta long. Autumn. 

 Locality. Rocks and trees. 



Fig. 5. Isothecium myosuroides. 

 Acute-leaved Frond Moss (a) , 



Colour. Yellow green. 



Stems. Slender, fasciculate ; branches in a thick tuft, incurved. 



Leaves (b) . Ovate-acuminate, serrated ; nerved to above the middle ; those of 



the perichfetium recurved. 

 Flowers and Fruit. Dioicous ; capsules erect or inclined, abundant; seta curved. 



Winter. 



Locality. On tnmks of trees and rocks, spreading in large patches, and very 

 common. 



