266 



HANDBOOK OF BRITISH HEPATICJE. 



Hep. f. 174. Riccardia pinguis, Carr. and 

 Pears. Exs. No. 59. 



In most places on marshes. 



Growing in loose and straggling patches. 

 Fronds I to 2 or 3 inches long, sometimes nearly 

 erect, oblong, narrowest at the base, thence 

 gradually widening 

 to the apex, which is 

 rounded and obtuse, 

 either simple, or with 

 one or two large divi- 

 sions or segments, and 

 other smaller ones, 

 plane or a little con- 

 cave, and swollen 

 (fig. 185); substance 

 fleshy and succulent, 

 opaque, yellowish 

 green. Calyx nearly 

 hemispherical, with 

 an expanded mouth 

 and fimbriate margin. 

 Calyptra linear ob- 

 long, cylindrical, straight, curved at the base,' 

 obtuse. Capsule oblong, red-brown, striate or 



furrowed, four-valved. 

 to each end. 



Elaters simple, attenuated 



Sub-order 2. MARCHANTIACEsE. 



Frondose, prostrate, areolate above, the 

 areoli uniporose, amongst the radicles beneath, 

 furnished with coloured seriate scales. An- 



