150 BRITISH MOSSES. 



Leaves. Ovate-lanceolate, upper lanceolate, margin recurved. 

 Fruit. Seta long, slender, bent at the base ; capsule small, seta bent below it. 

 Autumn. 



Locality. Clova Mountains, &c. near the line of perpetual snow. Fruit very- 

 rare. 



Fig. 11. Bryum Duvalii. 

 Duval's Thread Moss (a) . 



Colour. Yellow green. 



Stems. Long, with numerous innovations. 



Leaves (b) . Acute, running parallel with the stem (decurrent) ; apex recurved ; 



margins plane ; areolce large, undulated when dry. 

 Fruit. Capsule regular, pendulous. 

 Locality. Hart Fell, Moffat. Mr. Wilson's MS. 



(c). Leaves ovate, broad. 

 Fig. 12. Bryum Marattii. 

 Marat's Tl 'tread Moss. 



Colour. Light green. 



Stems. Short, innovations long. 



Leaves (b) . Large, ovate ; areolte large ; nerve prominent. 



Fruit. Seta very long, bent below the capsule ; capsule ovate-pyriform, 

 regular. 



Locality. Very rare in Britain. Mr. Wilson's MS. 



Fig. 13. Bryum calophyllum. 

 Long-stalked Thread Moss (a) . 



Colour. Bright green. 



Stems. Decumbent below, short, with innovations. 



Leaves. Broadly ovate, nerve ceasing below the apex ; areolae large and regular. 

 Fruit. Seta very long ; capsule pyriform, pendulous. 

 Locality. Very rare in Britain. Mr. Wilson's MS. 



