168 HANDBOOK OF BRITISH MOSSES. 



ORDER XIII. OREADEI, Br. & Schimp. 

 Sporangium small, subglobose, cernuous ; peristome single 

 or with traces of an inner peristome ; veil hood-shaped. 



41. CATOSCOPIUM, Brid. 



Sporangium shining, even, subcorneous, cernuous; ring 

 none ; peristome of sixteen short, lanceolate or truncate teeth, 

 with occasional traces of an inner membrane. Perennial 

 marsh Mosses. 



1. C. nigritum, Brid. Hook, fy Wils. t. xiv. ; Eng. Bot. t. 

 1825. ; (Plate 15, fig. 7) ; Moug. $ Nest. n. 1106. 



Moist rocks and marshes in alpine and subalpine districts. 

 Scotland and north of England. Bearing fruit in summer. 



Dioicous ; forming soft dense, green, tufts. Stems slender, 

 matted together below with rootlets, slightly divided ; leaves 

 erecto-patent, lanceolate, acuminate ; nerve reaching to the 

 tip, often reddish ; margin reflected ; leaf-cells elongated, not 

 angular; fruitstalk shining-red, J-l inch long; sporangium 

 elongated, rectangular, subglobose, suddenly bent at the base, 

 shining, even, chestnut-brown, then black ; lid shortly conical ; 

 teeth short, irregular, with traces of an inner membrane ; spores 

 large, even. 



Allied to Meesia. 



ORDER XIV. BARTRAMIEI, Br. & Schimp. 

 Sporangium spherical, mostly striated ; peristome variable ; 

 leaves rigid, lanceolate, keeled, denticulate. Perennial. 



42. CONOSTOMUM, Swartz. 



Sporangium subglobose, cernuous ; ring none ; veil hood- 

 shaped, rather large ; peristome of sixteen equidistant linear- 

 lanceolate teeth united at their apices and forming a cone ; 

 spores large. 



