168 



BRITISH MOSSES. 



PHYSCOMITRIUM. 



Fig. 11. Generic Character. 



Capsule (a) erect, pyriform; much wrinkled; lid obtuse or apiculate. Peristome 

 none. Calyptra (6) large and bladder-like, hence the name of the moss. 



Fig. 12. Physcomitrium ericetorum. 

 Narrow-leaved Bladder Moss (a) . 



Colour. Yellow green. 



Stems. Very short, in patches. 



Leaves (b) . Oval-lanceolate, narrow, bordered. 



Flowers and Fruit. Monoicous ; capsule erect, pyriform. Spring. 



Locality. Moist banks. 



Fig. 13. Physcomitrium pasciculare. 

 Fallow-field Bladder Moss (a) . 



Colour. Dark green. 



Stems. Very short, in patches. 



Leaves (b) . Long and narrow, lanceolate acuminate, not bordered. 



Floivers and Fruit. Monoicous ; calyptra much inflated, splitting on one side. 



Capsule small. 

 Locality. Fallow fields. 



Fig. 14. Physcomitrium pyriforme. 

 Pear-fruited Bladder Moss (a) . 



Colour. Light green. 

 Stems. Very short, tufted. 



Leaves (b) . Oval-oblong, apiculate, spreading ; nerved almost to the apex, base 



sheathing, slightly serrated. 

 Floivers and Fruit. Monoicous ; capsule erect ; calyptra much divided at the base. 



Spring. 



Locality. Moist banks, in great abundance. 



