HANDBOOK OF BRITISH HEPATIC^. 1 89 



more or less incurved, subquadrate, widely and 

 obtusely notched at the apex, with the points 

 acute, and sometimes involute (fig. 135) ; the lower 

 ones cleft into three, or more rarely four, teeth, 

 which are frequently unequal. Perichaetial leaves 

 closely embracing the calyx, cut at their apex into 

 three, four, or five acute, unequal teeth. Fruit 

 terminal. Calyx at first spherical, and afterwards 

 oblong-ovate, plicate towards the apex, mouth 

 contracted and minutely toothed. Capsule deep 

 brown, furrowed ; elaters bispiral. 



Dr. Gottsche says that this species may always 

 be distinguished from its allies by the violet colour 

 of the cortical layer of the stem. 



Jungermannia porphyroleuea, 



Stem creeping, rather rigid; leaves ovate, 

 bifid ; lobes unequal, rather obtuse ; peri- 

 chaetial leaves multifid, attenuated at the base, 

 subconnate ; stipules none ; perianth club- 

 shaped, plicate at the apex, mouth den- 

 ticulate. 



Jungermannia excisa, Fl. Dau. t. 1715, f. I ; 

 Ekart. Syn. Jung. X., f. 79. Jungermannia 

 porphyroleuea, Nees Eur. Leb. II., 78 ; Gott. 

 and Rab. Hep. Exs. No. 184, 185, 288; Carr 

 and Pears. Exs. No. 172. 



On trunks and amongst moss. 



Stem serpentine, creeping, radiculose, alternately 

 branched, rather rigid, leaves semi-vertical, spreac 1 



