Jungermannia.] HEPATIC^. 59 



Aooreagh River, near Sneem : rare. This species is more reddish and 

 pellucid than the preceding- or than J. pumila. A variety from 

 Aooreagh River has the leaves broad, kidney-shaped ; the calyx nar- 

 row below, plicate above ; the stems more erect. 



18. J. compressa, HOOK. Stem erect; leaves orbicular ad- 

 pressed, secund ; fruit terminal ; calyx immersed in the peri- 

 chaetial leaves, oblong, fleshy, the mouth open, toothed. Hook. 

 Br. Jung. t. 38. 



Sides of livulets ; at Lough Bray. Near Bantry, Miss Hutchins. 

 At Aooreagh River, near Sneem. The tops of the shoots are wider 

 and redder than the inferior part. Stipules are found on the very 

 young shoots only. When fresh it is very fragrant. 



* * Leaves emarginate or bifid, the segments equal. 



19. J. microscopica. Stem very minute, very slender, 

 curved ; leaves ovato-lanceolate, concave, reticulate, celluloso- 

 serrate, distant, patent. 



On Uypnum loreum, on a loosely caespitose bank in the wood at 

 Gortagarree, near Killarney. This, the most minute of the genus yet 

 discovered, grew almost parasitically on the Hypnum, on which it 

 was detected by the microscope. Although the fruit has not been 

 found, there are abundant marks to characterise the species. The stems 

 are not one-tenth as broad as the leaves, 4 and these are of a very pale 

 green colour, and serrulated on the margin by the projections of an- 

 gular, colourless, pellucid cells. The naked eye can trace no form 

 whatever, only a minute greenish stain appearing on the paper to 

 which it is affixed. 



20. J. emarginata, EHRHART. Stem erect; leaves patent, 

 obcordate, emarginate ; fruit terminal ; calyx immersed in the 

 perichaetial leaves, ovate, toothed, Ehrh. Beit. 3, p. 80. Hook. 

 Br. Jung. t. 27. 



On wet rocks ; common. 



21. J. concinnata, LIGHTFOOT. Stem erect; leaves very 

 closely imbricated, erect, concave, ovate, obtuse, emarginate ; 

 fruit terminal ; calyx none ; calyptra concealed by the peri- 

 chaetial leaves. Light. Flor. Scot. v. 2, p. 786. Hook. Br. Jung. 

 t.3. 



On Macgillicuddy's Reeks, and other high mountains. To the 

 naked eye the branches appear destitute of leaves and have a silvery 

 hue. 



22. J. Orcadensis, HOOK. Stems erect ; leaves closely im- 

 bricated, erecto-patent, cordato-ovate, their margins recurved. 

 Hook. Br.Jung.t. 71. 



On Brandon Hill ; rare. 



23. J. inflata, HUDS. Stems erect ; leaves roundish, acutely 

 bifid, concave, the segments very obtuse ; fruit terminal ; calyx 

 oblongo-obovate, the mouth contracted, toothed. Hudson^ FL 

 Ang.p. 571. Hooker Brit. Jung. t. 38. 



