174 BRITISH MOSSES. 



Plate XXVII. 



OREADE^. 



The typical form of the order is unknown in Britain ; its only represen- 

 tative is — 



EiG. 1. Catoscopium nigeitum. 



Down-looMng Moss (6) . 



Oolowr. Yellow green. 



Stems. Slender^ tufted^ with innovations^ radiculose. 



Leaves (c) . Lanceolate^ spreading ; areolae small. 



Flowers and Fruit. Dioicous. Seta slender; capsule (a) rounds furrowed, 



shining, horny, neck suddenly bent, mouth oblique ; peristome single, of 



sixteen barred teeth. Spring. 

 Locality. Moist rocks. Rare. 



DISCBLIE^. 

 Fig. 2. Disceliuh nudum. 



Naked Moss (&) . 



Colour. Dark green. 



Stems. Hardly any, the plant springing from a film {thallus) ; plants in large 

 patches. 



Leaves. Very few, lanceolate-ovate, imbricated, transparent [diaphanous) . 



Flowers and Fruit. Dioicous (?) , both male and female plants having apparently 

 the same rhizoma. Seta long, succulent, white ; capsule [a] roundish, suc- 

 culent, neck suddenly bent ; peristome single, of sixteen teeth, lanceolate, 

 barred, cleft half way. 



Locality. Springing annually in immense patches upon clay banks in the north 

 of England. 



