286 HANDBOOK OF BRITISH MOSSES. 



subexcurrent ; leaf-cells as in the last ; teeth large, bright red, 

 more finely striated than in C. polycarpum. 



98. ARCTOA, Br. §■ Schimp. 



Sporangium short, somewhat turbinate, on a short fruitstalk, 

 deeply furrowed when dry ; ring simple ; veil cucullate, in- 

 flated ; peristome single, of sixteen equidistant narrow teeth, 

 unequally cloven or perforated, with numerous transverse bars ; 

 leaf-cells elongated, rectangular at the base. 



1. A. fulvella, Br. fy Schimp. — Hook. §• Wils. t. xxxiii. ; 

 Eng. Bot. t. 1952, 2268 ; Grev. Sc. Crypt. Fl. t. 188. 



Fissures of alpine rocks. Scotland and Wales. Bearing 

 fruit in summer. 



Monoicous ; forming dense dull-green tufts. Leaves 

 crowded, subulate, almost falcate, not crisped when dry, toothed 

 above; nerve strong; lid obliquely rostrate; teeth striated 

 like those of Dicranum. 



99. BLINDIA, Br. $ Schimp. 



Sporangium roundish, turbinate when dry ; veil at first 4-6- 

 gonal at the base, then cucullate ; ring none ; peristome sin- 

 gle, of sixteen equidistant entire or cribrose teeth, sometimes 

 cloven above, slightly trabeculate; leaf-cells minute above, 

 rectangular, gradually larger downwards, those at the angles 

 hyaline, very much dilated, with a distinct primordial mem- 

 brane. 



1. B. acuta, Br. §• Schimp. — Hook, fy Wils. t. xv. ; Eng. 

 Bot. t. 1644, 2552. ; (Plate 24, fig. 1) ; Moug. 8p Nest. n. 

 610. 



On moist alpine or subalpine rocks. Bearing fruit in sum- 

 mer. 



