232 HANDBOOK OF BRITISH MOSSES. 



73. GLYPHOMITRIUM, Schwceg. 



Sporangium roundish; veil large, ventricose, plicate, at 

 length laciniate, rostrate above; peristome single, of sixteen 

 teeth, disposed in pairs, and inserted below the rim of the 

 sporangium with numerous prominent transverse bars. 



1. G. Daviesii, Schwceg. — Hook, fy Wils. t. xiii. ; Eng. Bot. 

 t. 1281.; (Plate 21, fig. 2). 



On rocks, chiefly near the sea, as at the Giant's Causeway. 

 Bearing fruit in summer. Not found on the Continent. 



Forming little dense, short, dark-green tufts, about \ an 

 inch high. Leaves spreading, narrow, linear-lanceolate ; leaf- 

 cells quadrato-punctiforrn above and on the slightly thickened 

 margin, gradually longer downwards, and still rectangular; 

 fruitstalk short; sporangium erect, roundish; lid rostrate, 

 nearly as long as the sporangium, from a flattish base ; teeth 

 in pairs, trabeculate externally, reddish; spores large; veil 

 swollen below and laciniate, acicular above. 



Oedbb XXIV. GBIMMIEI, Br. & Schimp. 



Sporangium equal, often sessile; peristome single; veil 

 mitriform ; leaves dark-green, mostly terminated by a white 

 hair-like point; leaf-cells of the upper part of the leaves 

 hexagono- or quadrato-punctiform. 



74. RACOMITRIUM, Br. fy Schimp. 

 Sporangium erect, regular; veil mitriform, even, multifid 

 at the base, subulate at the tip which is papillose ; ring large ; 

 peristome single, of sixteen bi-trifid teeth, divided sometimes 

 to the base, very long or rather short, unequal and irregularly 

 cohering ; vaginula with an ocrea at the summit ; leaf-cells 

 quadrate above, elongated and often sinuous below, rarely 

 almost uniform throughout. 



