230 H E P A T I C M. [Jungermannia. 



21. J. orcadensis ; stem erect nearly simple, leaves closely im- 



bricated erect or patent cordato-ovate the margins recurved. 

 Jungermannia orcadensis. Hook. Brit. Jung. t. 71. 



HAB. Mountains. Orkney, Angusshire and Cumberland. 

 South of Ireland. 



22. J. inflata; stem erect simple or branched, leaves roundish 



concave acutely bifid, segments straight obtuse, fruit terminal, 

 calyces pyriform, the mouth contracted toothed. 



Jungermannia inflata. Hook. Brit. Jung. t. 38. Engl. Bot. t. 2512. 



HAB. Moist heaths. 



23. 7. excisa; stem prostrate nearly simple, leaves patent sub- 



quadrate deeply notched, fruit terminal, calyces oblong, the 

 mouth plicated toothed. 



Jungermannia excisa. Hook. Brit. Jung. t. 9. Engl. Bot. t. 2497. 



HAB. Wet heaths and shady woods on the ground. 



24. /. ventricosa; stem prostrate somewhat branched, leaves 



patent subquadrate bluntly emarginate, the sides incurved, 

 fruit terminal, calyces oblong, the mouth contracted plicated 

 toothed. 



Jungermannia ventricosa. Hook. Brit. Jung. t. 28. Engl. Bot. t. 

 2568. 



HAB. Shady woods and banks. 



25. J. Turneri ; stem procumbent flexuose branched in a stellated 



manner, leaves broadly ovate acutely bipartite, segments 

 subconduplicate spinuloso-dentate, the fruit terminal, calyces 

 linear-oblong longitudinally plicated. 



Jungermannia Turneri. Hook. Brit. Jung. t. 29. Engl. Bot. t. 

 2510. 



HAB. Shady bank of a mountain rivulet near Bantry, 

 Ireland. 



26. J. bicuspidata; stem procumbent branched in a stellated 



manner, leaves subquadrate acutely bifid, the segments acute 

 straight entire, fruit terminal, calyces oblong plicate, the 

 mouth toothed. 



Jungermannia bicuspidata. Hook. Brit. Jung. t. 11. Engl. Bot. t. 

 2239. 



HAB. Hedge banks and moist heaths, common. 



27. J. byssacea ; stem procumbent branched in a stellated man- 



