EXPLANATION OF THE PLATES. 



205 



Fig. 16. Hypnum murale. 

 W ill Feather Moss (a) . 



Colour. Dark green. 



Stems. Creeping - , branches roundish, erect, crowded. 



Leaves (b) . Roundish ovate, suddenly acuminate, serrated, concave, nerve reach- 

 ing half-way. 



Flowers and Fruit. Monoicous ; capsule ovate, nearly erect, lid short. Autumn. 

 Ijocality. Walls and rocks. 



Fig. 17. Hypnum tenellum. 



Tender Fea ther Moss (a) . 

 Colour. Emerald green, silky. 



Stems. Creeping, branches erect, fasciculate, short. 



Leaves (b) . Subulate, entire ; nerve to more than half-way. 



Flowers and Fruit. Monoicous ; seta short, slender ; capsule ovate, beak curved. 

 Autumn. 



Locality. Walls and rocks, especially chalk. 



Hypnum catenulatum. 

 Thread-lihe Feather Moss. 



Colour. Blackish green. 



Stems. Creeping, pinnate; branches erect, filiform. 



Leaves (b) . Imbricated, ovate, minute, nerved half-way, margin recurved below. 

 Floivers and Fruit. Dioicous; capsule oval-oblong-; not known in Britain. 



Summer. 

 Locality. Alpine rocks. 



