90 



BRITISH MOSSES. 



Leaves. Oblong-lanceolate ; margin recurved ; nerve excurrent. 

 Capsule. Very small ; lid large in proportion ; beak short. Winter. 

 Locality. Fallow fields. 



Variety. Pottia coryica (Fig. 5, a) . Leaves ovate-lanceolate ; capsule narrower. 



Fig. 6. Pottia tbuncata. 



Common Pottia (a) . 



Colour. Dull green. 

 Stems. Half-inch long'. 



Leaves (5) . Oblong-lanceolate ; margin reflexed ; nerve sometimes excurrent, 



sometimes ceasing below the apex. 

 Capsule. Oblong, lid obliquely rostrate. Spring. 

 Locality. On earth in fields and banks. 



Fig. 7. Pottia Wilsonii. 

 Oval-fruited Pottia {a) . 



Colour. Yellow green. 

 Stems. Very short; tufted. 



Leaves (jb) . In eight rows, ovate-oblong ; nerve excurrent. 

 Capsule. Elliptic-oblong, mouth contracted. Spring. 

 Locality. Sandy banks. 



Fig. 8. Pottia crinita. 

 Bristly Pottia (a) . 



Colour. Yellow green. 

 Stems. Short, thickly tufted. 



Leaves. Ovate-oblong, obtuse, with a bristly point; nerve strong. 

 Capsule. Elliptic-oblong, hardly contracted ; calyptra smooth. Spring. 

 Locality. Banks and earth on the sea-coast. 



A variety of P. crinita (Fig. 9, a, b,) has longer stems, with larger leaves, 

 a much shorter point. 



