370 HEPATICJ^. 



Borrowdale, Cumberland, W. 11. P. 13. New Galloway, J. McAn- 

 clrew. 15. Succoth Hill, Arroquhar, A. McKinlay ; Ben Sligott, 

 C. Howie; Ben Mac Dliui, G. E. Hunt, J. Wliifehead ; Glen Clunie, 

 Aberdeen, J. Whifehead ; Ben Laoigb, T. Fwfjers. 16. Moidart, 

 West Inverness, 600 feet, 8. M. Macvicar. 



I. Bantry, Miss Hut chins ; Aooreagb River near Sneem, Br. 

 Taylor ; abundant at Upper Lougb Bray, Br. B. Moore ; Luggie- 

 law and Seven Cburcbes, Dr. D. Moore ; Connernara, near Kyle- 

 more, Gal way, Br. B. Moore; Kelly's Glen, Dublin; Killarney, 

 Dr. Carrington; Co. Wicklow, Prof. S. 0. Lindherg. 



Found on the Continent, also in Greenland. 



Obs. — This species, being semi-aquatic, sometimes grows to the 

 length of 4 or 5 inches, and forms in some subalpine rivulets 

 large patches over which the water is constantly flowing. 



In drier alpine situations a small variety is found, of a deep 

 purple colour, steins J to |- inch long, simple, leaves orbicular, 

 closely imbricate, stipules dentate. 



From Nardia scalaris [ScJirnd.) it is distinguished by its 

 reniform, closely laterally appressed leaves, which are also 

 thinner and more delicate, and its large cortical stem cells. 



From JamesonieUa Carrincjtoni {Balf.\ S^jriice^ see notes 

 under that species. 



Description of Plate CLX. — Fig. 1. Plants natural size. 

 2. Portion of stem x 16 (Ireland, S.O.L.). 3-5. Leaves x 16 

 (ditto). 6. Portion of leaf x 290 (ditto). 7, 8. Stipules x 24. 

 (ditto). 9. Stipule X 24 (Cader Idris, W. H. P.). 10. 11. 

 Longitudinal sections of bracts and perianth (Dr. Gottsche, G. R. 

 Hep. Eur. 443). 12, 13. Perigonial bracts x 16 (Ireland, S.O.L.) 

 14. Antheridium x 85 (ditto). 



4. Nardia scalaris [ScJtrad.), Gr. §• B. 



Jungermania scalaris, Schrad. Syst. Samml. Krypt. Gew. 2, p. 4 (1797). 

 Nardia scalaris, Gr. (Si B. ISTat. Arr. Brit. pi. p. 694 (1821). 

 Mesophylla scalaris, Dum. Comm. Bot. p. 112 (1822). 

 Alicularia scalaris, Corcla in Opiz Nat. p. 653 (1829). 



Dioicous, loosely or densely ca}spitose, eflagelliferous, small^ 



