170 HANDBOOK OF BRITISH HEPATIC^.. 



base, smaller towards the base of the stem, light 

 yellowish green, varying to dirty brown (fig. 122). 

 Perichsetial leaves larger and more oblong than the 

 rest, concave at the base, upper part spreading. 

 Calyx large, a little incurved, slightly thickened 

 upwards, the apex depressed and flattened, mouth 

 contracted, minute, and slightly toothed. 



Aplozia pumila, With., Bum. 



Stem ascending, simple ; leaves incumbent, 

 elliptical-ovate, entire, perichaetial oblong, 

 stipules none. Perianth terminal, fusiform, 

 plicate, mouth denticulate, compressed front- 

 ally. 



Jungermannia pumila, With. Arr. III., 866; 

 Hook. Br. Jung. t. 17; Eng. Bot. t. 2230; 

 Gott. and Rab. Exs. No. 244, 237, 396, 198; 

 Carr. and Pears. Exs. No. 102 ; Cooke Hep. 

 fig. 68. Aplozia pumila, Dum. Hep. Eur. 



P- 59- 



On rocks. (Fr. May, June.) 



var. P nigricans, Hook. Jung. t. 17, fig. 7-10. 

 Stems branched, leaves more remote, turn- 

 ing black. 



Forming small loose patches. Stems \ inch 

 long, wholly procumbent, or ascending at the ex- 

 tremity, mostly simple, though occasionally divided. 

 Leaves rather close, varying from horizontal to 

 erect, ovate, approaching elliptical, sometimes 



