McArdle — A List of Irish Hepaticce. 473 



Sub-genus 5. Anastrepta Lindb. 

 22. Jungermania orcadensis Hook. 



/. orcadensis Hook., Erit. Jung., tab. 71. Mesophylla orcadensis 

 Dum., Hepat. Eur., p. 130. Jungermania orcadensis Hook., Moore, 

 Irish Hepat., p. 650. Pearson, Hepat. Brit. Isles, p. 357, plate 155. 



Districts I. YIII. . 



Sah. — Growing in loose patches on rock-ledges, or mixed with 

 other Hepaticae or Mosses, in alpine and subalpine situations. 



I. On the summit of Brandon among Hypnum loreum, 1813 

 (Taylor) : Hooker 1816. On the east side of Brandon, near the sum- 

 mit, among Scapania ornithopodioides, June 1900 : Lett & McA. 

 Connor Hill, among Serberia adunca, 1873 : Lindberg 1875. Glencar, 

 and at 2500 ft. on the Eeeks : Scully 1890. 



VIII. On Slievemore, Achill, Sept. 1901 : Lett. 



Note. — An interesting Jungermania was found by Mr. Hunter on 

 schist rocks at Rathmullen, Co. Donegal, in 1893, unfortunately 

 witliout fruit. Prof. Kaalaas, to whom specimens were sent for 

 identification, writes : — " The most striking character in the plant is 

 the almost rectilinear truncate leaves, which, with regard to theii" 

 form, are very like those of Jungermania alpestris ; but it cannot for 

 many reasons be referred to that species. In most respects, it seems 

 to come near J. Wenzelii, which, however, is somewhat larger, and 

 moreover an alpine species that is not likely to be met with in Ireland. 

 I do not know any European species to which your plant with cer- 

 tainty can be referred. Until fertile specimens shall be found it will 

 be difficult to settle this question." 



Genus 29. Nardia Gray and Bennett. 



Subgenus 1 . Eucalyx Lindberg. 

 1 . Nardia hyalina Lyell, Carrington. 



Jungermania hyalina Hook., Brit. Jung., tab. 63. Aplozia hyalina 

 Dumoi't., Hepat. Eur., p. 58. Nardia hyalina Carrington, Brit. Hepat., 

 p. 35, pi. 11, fig. 36. Moore, Irish Hepat., p. 657. Pearson, Hepat. 

 Brit. Isles, p. 364, plate 158. 



Districts I. — III. IV. V. VIII. — X. XI. XII. 



Hob. — Moist banks and by the sides of streams in rocky places. 



I. Aooreagh River near Sneem, rare : Taylor 1836. Brandon, 

 1823 (W. Wilson): Moore 1876 ; and in 1881 : F. W.M.&McA. Connor 

 Hill, 1881 : F. W. M. & McA. Between Emalough and Inch, 1899 : 



