[ 17 ] 



IY._NOTES ON SOME NEW OH RARE IRISH HEPATIC^, 

 BY DAVID M'ARDLE. Plates 5 and 6. 



[Read, November 15th, 1880,] 



It is now more than four years since the late Dr. Moore read 

 before the Royal Irish Academy his " Report on Irish Hepaticse," 

 the result of many years research and investigation of this 

 interesting tribe of cryptogams. In this paper he enumerated 

 137 species, and appended to it a list of all previous papers and 

 works relating to the Hepaticse of Ireland. 



Since the publication of that Report* a few additional species 

 have been determined, and new localities for some of the rarer 

 ones have been discovered, which were hitherto confined to one 

 locality. The record of these additions forms the subject of the 

 present paper. 



I had the honour of accompanying the late Dr. Moore in many 

 of his excursions through the country in search of Hepaticse and 

 mosses, and remember that on one of these occasions when 

 collecting on the damp sandy flats at Malahide where the rare 

 Codonia Ralfsii and Pcdavicinia Hihernica are found, he 

 pointed out to his son, Mr. F. W. Moore, the present Curator of 

 the Royal Botanic Garden, Glasnevin, and to me, a single plant 

 of the rare Scalia Hookeri (Lyell) B. Gray. This unique speci- 

 men we unfortunately lost before reaching home, and conse- 

 quently had only the opportunity of examining it in the field 

 with a pocket lens. There can be no doubt as to its being the 

 right plant, and probably it occurs in some quantity in the 

 locality where before long we hope to make a careful search, and 

 endeavour to verify the station. The only authority for record- 

 ing Scalia Hookeri as an Irish plant was from a small portion 

 collected at Connor-hill near Dingle, county Kerry, in 1873, by 

 Dr. Lindberg of Helsingfors. To the genus Cesia I have added 

 two species hitherto unknown to occur in Ireland, it being held 

 by many good botanists that we have but one — viz., G. crenulata, 

 Gott. When looking over the specimens in the Herbarium at 

 Glasnevin, there were two packets containing specimens which I 



* Proceedings of the Royal Irish Academy, Vol. 2, Ser. ll—Science, p. 591. 

 SciEN. Proc, R.D.S. Vol. ni., Pt. i. ^ 



