224 BRITISH MOSSES. 



Fig. 13. Hypnum KtrGOSuM. 

 Wrinhle-leaved Feather Moss (a) . 



Colour. Brownish green. 



Stems. Procumbent, tufted^ fertile regularly, barren irregularly, pinnate; 

 branches, short, attenuated, recurved. 



Leaves (&) . Ovate-lanceolate, falcate, secund, wrinkled and folded ; margin re- 

 curved, nerved half-way. 



Mowers and Fruit. Dioicous ; capsule not found in Britain. 



Locality. Rocks and heaths in various parts. 



3. Leaves striated, nerveless or two-nerved, serrulate. 



Fig. 14. Hypnum ceista-casteensis. 



Ostrich Plume Feather Moss (a) . 

 Colour. Yellow green. 



Stems. Almost erect, piianated regularly, branches crowded, slightly recurved. 

 Leaves (b) . Circinnate, secund, ovate on the stem, lanceolate on the branches, 



all acuminate and margins recurved, serrate at the apes, cusped at the 



ends of the branches. 

 Flowers and Fruit. Dioicous. Seta long, capsule large, oblong, cernuous; lid 



pointed. 

 Locality. Alpine woods in the north of England. 



A very distinct species, the most regularly pinnate of any. 



Fig. 15. Hypnum molluscum. 



Plumy-crested Feather Moss (a) . 

 Colour. Grass green. 



Stems. Regularly pinnate, branches crowded. 

 Leaves. Circinnate, secund, on the stem cordate, on the branches lanceolate, all 



acuminate and serrated, base two-nerved. 

 Flowers and Fruit. Dioicous; seta slender; capsule ovate, horizontal, lid sharply 



pointed. Winter. 



A miniature resemblance of the last species. 



