BARTRAM1EI. 173 



nerve and towards the base, slightly papillose; margin re- 

 flected at the base only; pcrigonial leaves large, spreading, 

 widely nerved to the apex, acuminate; sporangia large, ovato- 

 globose or spherical; teeth of peristome rather short, with 

 distant articulations. 



8. B. arcuata, Brid. ; dioicous ; stem elongated ; branches 

 fasciculate or whorled ; leaves squarrose, from a broad erect 

 sheathing base, sharply toothed, sulcate, scabrous ; fruitstalk 

 arcuate; sporangium subpendulous. Hook, fy Wils. t. xxiii. ; 

 Eng. Bot. t. 1237. 



On wet rocks. Scotland to Devonshire. Bearing fruit, but 

 rarely, in autumn. 



Forming large yellow-green patches. Stems densely clothed 

 with rusty rootlets ; leaves squarrose, lanceolate, from an ovate 

 sheathing base; fruitstalk about \ an inch long; sporangium 

 subglobose, not so strongly sulcate when dry as in other 

 species. 



This species belongs to BridePs genus Breutelia, character- 

 ized principally by its subpendulous sporangium. 



44. BARTRAMIDULA, Br. $ Schimp. 



Sporangium pendulous on a curved fruitstalk, globose, thin, 

 soft, not striated ; mouth small ; peristome none ; spore-sac 

 united above with the columella. Perennial. 



1. B. Wilsoni, Br. % Schimp. Eng. Bot. t. 2919. 



On loose, black, turfy soil. Ireland and Wales. Bearing 

 fruit in October. 



Synoicous ; forming loose low patches. Stems slightly de- 

 cumbent below, branched ; leaves ovate, acuminate, minutely 

 toothed above ; nerve reaching to the tip or excurrent ; leaf- 

 cells rather lax, oblong, slightly papillose ; fruitstalk 3 or 4 

 lines high, arched above; sporangium subglobose or pear- 



