616 Froceedings of the lioyal Irish Academy. 



Hab. ''Co.Keny: Killamey, Glena et Croniagiaun, locis Timbrosis silva- 

 mm, ad truncos arborum Tetustaruin, et supra Isopterygium 

 elegans in fissuris rupium." — Lindb. Glen at tbe Hunting Tower, 

 Cromaglaun, 1862; O'Sulliran's Cascade, 1875. 



11. Z(?;'e?<we« J/r/fZ'ff// (Hooker), Sprengel. Autoecious. Stem creeping. 

 Leaves distichous, unequally 2-lobed, the upper lobe large and 

 round, the lower small and involute. Amphigastria obcordate, 

 roiindish, wider than the stem. Colesule compressed, gibbous- 

 below, mouth contracted, toothed. ]\rale branches proceeding- 

 from side of stem, not in axils of the leaves, but directly under 

 the leaf next above. 



Jungermannia 3Iackaii, Hook. Brit. Jung. t. 53 ; Engl. Bot. t. 2573; 

 Lindb. Hepat. Eui'op. p. 20; Ekart, Syn. Jung. p. 59, t. 10, fig.. 

 72. Phi'agmicoma Mackaii, Lumort. Comm. Bot. p. 112; SylL 

 Jung. p. 35, et Hepat. Europ. p. 30 ; jS^ees, Europ. Leberm., 3,. 

 p. 249; G. L. et X. Synop. Hep. p. 293; Eabenhor. Hep. 

 Europ. exsic. n. 81, 164, 206. llarchesinia ]Mackayi, B. Gr. in 

 Gray's Arr. Brit. PL 1, p. 689. Lejeuneallackaii, Sprengel, Syst.^ 

 Yegt. ed. 16, p. 1, p. 233 ; Lindberg, Hepat. Scand. exsic, fasc. 1. 



Hab. Limestone rocks principally. Erequent in the south and west 

 of Ireland, rarer in the north and east. Yery large and fine at 

 JJucki'oss, Eallamey, and by the side of a lake near Letterfrack, 

 Galway ; ^^oodlands, Dublin ; near Cork, frequent. The stems- 

 are sometimes quite black, when creeping over the nearly per- 

 pendicular faces of rocks. 



EiDrLA, Dumortier. 



Jungermannia, Eiipp. El. Jen., 1 ed. p. 345 (1718); Hooker, Brit. 

 Jung. (1816); Martinellia, sect, a, B. Gray, in Gray's Xat. Arr. 

 Brit. PI. 1, p. 690 (1821). Eadula, Dumort. Comm". Bot. p. 112 

 (1823), et Eecueil, 1, p. 14(1835); IS^ees, ISTat. Eur. Leberm. 1, 

 p. 96 (1833). Jubula, Corda, in Sturm, Deutschl. El. 2, fasc. 26 et 

 27, p. 152 (1835). 



1. Radula Xala^jensis, jST. M. (1836). Dioecious. Stems procumbent, 

 pinnately branched. Leaves incubous, orbicular, obtuse, entii'e, 

 upper lobe large and broad, undulate and somewhat cordate at 

 base. 



Eadula Xalapensis, IT. II., iu Ann. Sc. !N'at. 2 series, 5, p. 56 ; Liudb. 

 Hepaticae in Hibernia lectee (1875). Eadula voluta, Taylor, in 

 G. L. et N. Svnop. Hep. p. 253 (1845) ; Cooke's Brit. Hepat. p. 

 18, fig. 136; Dumort. Hepat. Europ. p. 32. 



Hab. On wet rocks near streams. Dunkerron, Dr. Taylor. On boulders- 

 by the side of the stream below Tore AVaterfall, Killarney, Dr. 

 Carrington. Eocks below the Eagle's Xest, Cromaglaun, George 

 E.Hunt. XearDcrrycunighy Cascade, and at Gortagre. Dr. Lind- 

 berg states that he can find no great distinction between the Xil- 



