226 HANDBOOK OF BRITISH MOSSES. 



On rocks and roots of trees near rivers in alpine countries. 

 England, Ireland, and Wales. Bearing fruit in spring. 



Forming loose, dull, dark-green tufts, often floating. Stems 

 branched ; leaf-cells minute, papillose ; lid shortly rostrate. 



Easily distinguished from the last by its minute reticula- 

 tions as well as by its larger size. 



c. Teeth eight, soon broken up into sixteen ; cilia sixteen, as 

 long as the teeth. 



15. O. diaphanum, Schrad. ; short, loosely tufted ; leaves 

 erecto-patent, loosely imbricated when dry, ovato-lanceolate, 

 acuminate, with a diaphanous, often toothed, almost hair-like 

 apex; margin revolute; sporangium oblongo-pyriform, sub- 

 striate ; veil mostly naked. Hook, fy Wils. t. xxi. ; Eng. Bot. t. 

 1324. ; (Plate 20, fig. 6) ; Moug. fy Nest. n. 325. 



On trees, stones, etc. Common. Bearing fruit in early 

 spring. 



Forming bright-green soft tufts. Leaf-cells large, very ob- 

 scurely marked at the diaphanous tips; fruitstalk short; 

 sporangium sometimes very obscurely ribbed when dry; lid 

 shortly rostrate. 



16. O. pulchellum, Sin. ; short, tufted ; leaves spreading, 

 suberect and slightly crisped when dry, soft, linear-lanceolate ; 

 margin revolute ; fruitstalk elongated ; sporangium oval, 

 striate ; lid naked ; teeth reflexed when dry. Hook, fy Wils. 

 t. xxi. ; Eng. Bot. t. 1787.; (Plate 20, fig. 7). 



On trunks of trees and stones. Bearing fruit in spring. 



Forming little pale-green tufts. Leaves tender, slightly 

 waved ; leaf-cells above beautifully arranged in lines, puncti- 

 form ; sporangia red, with eight reddish streaks, ribbed when 

 dry ; teeth sixteen, with sixteen cilia. 



