HANDBOOK OF BRITISH HEPATIC^. 



49 



largest, of the same shape as the calyptra in mosses, 

 oviform, its base narrowed, furnished with a narrow 

 opening about half 

 the length of the leaf, 

 the apex lengthened 

 out, incurved and 

 acute ; lesser lobe 

 subquadrate, with 

 obtuse angles, ad- 

 pressed to the larger 

 one, half embracing 

 it, and concealing the 

 opening. Colour 

 pale yellow green. 

 Perichaetial leaves 

 from two to four, 

 erect, adpressed to 

 the calyx and about one-fourth the length, nearly 

 quadrate, sides incurved, apex obtusely and widely 

 emarginate. Stipules small, oblong, plane, ad- 

 pressed or a little spreading, cleft one-third by an 

 acute sinus into two nearly equal acute segments. 

 Calyx oblong, attenuated at the base, widening up- 

 wards, with five projecting angles, or teeth, apex 

 depressed, mouth contracted and jagged. Capsule 

 membranous, white, four cleft halfway down. Ela- 

 ters bispiral (fig. 35). 



35- 



Tribe II. JUNGERMANNIE&. 



Female flowers with few or many pistillidia 

 (5 to 80). Capsule globose, oblong, or 



