262 HANDBOOK OF BRITISH MOSSES. 



sporangium ovate ; ring none ; lid obliquely rostellate ; teeth 

 unequal. — Hook, fy Wils. t. xx. ; Eng. Bot. t. 2015.; (Plate 

 22, fig. 8) ; Moug. % Nest. n. 914. 



Near the sea, on walls, banks, etc. Bearing fruit in spring. 



Monoicous; forming dull-green tufts. Leaf-cells dense 

 above, lax below, more like those of Trichostomum than Bes- 

 matodon. Sometimes the peristome is very imperfect. It i3 

 Desmatodon nervosus of the ' Bryologia Britannica.' 



83. LEPTOTRICHUM, Hampe. 



Sporangium erect ; peristome single, of thirty-two teeth ar- 

 ranged in pairs, sometimes reduced to sixteen ; leaves glossy ; 

 narrow, elongated, translucent, not papillose. 



1 . L. tortile, Mull. ; stem short ; leaves spreading or se- 

 cund, curved, lanceolato-subulate, serrated at the tip ; margin 

 reflexed ; nerve excurrent ; sporangium cylindrical ; lid short ; 

 ring narrow ; peristome variable. — Hook, fy Wils. t. xli. ; Eng. 

 Bot. t. 2380. ; {Moug. # Nest. n. 1012.) 



On sandy banks, in quarries, etc. Ireland, Yorkshire, and 

 Sussex. Bearing fruit late in autumn. 



Dioicous ; gregarious or loosely tufted. Lid a quarter as 

 long as sporangium ; teeth of peristome red, varying in length 

 and in pairing; leaf-cells elongated, not at all resembling 

 those of Tortula. 



2. L. flexicaule, Mull. ; stems elongated, slender, much 

 branched, densely tufted ; leaves spreading or secund, lanceo- 

 lato-subulate ; nerve broad, excurrent; sporangium small, 

 ovato-oblong ; ring simple ; lid shortly rostellate ; teeth un- 

 equal, rather long. — Hook, fy Wils. t. xlii. ; (Moug. fy Nest. n. 

 213.) 



On calcareous rocks, Scotland and Derbyshire. Bearing 

 fruit on the Continent in summer. 



