HANDBOOK OF BRITISH HEPATIOE. 1 93 



Carr. and Pears. Exs. No. 241 ; Cooke Hep. 

 % 82. 



In moist places, bogs, &c. (Fr. Winter and 

 Spring.) 



Forming small dense patches of pale green, 

 firmly attached to the ground by numerous radi- 

 cles. Stems prostrate, \ inch long, generally simple ; 

 leaves rather distant at 

 the base, become larger 

 and more approximate 

 upwards, subquadrate, a 

 little embracing and de- 

 current at the base, an- 

 terior margin a little 

 involute ; apex three or 

 four toothed, segments unequal, crisped and dis- 

 torted, their margins frequently toothed (fig. 138). 

 Perichaetial leaves trifid or quadrifid, the segments 

 more equal than in the stem leaves. Fruit ter- 

 minal. Calyx obovate and plicate, contracted, and 

 torn at the mouth. Calyptra obovate, whitish. 

 Elaters bispiral. Gemmae produced in December 

 and January. 



Jungermannia Pearsoni, Spruce. 



Dioicous, small, stem furcate. Leaves dis- 

 tant, transverse, broadly wedge-shaped, com- 

 plicate^ keeled, deeply bifid, segments erect, 

 parallel to the stem, ovate, acuminate. Male 

 inflorescence in the middle of the stem or 

 branches. 



o 



