48 THE i-'LORA OF IRELAND. 



connecting- link between the moss and liverwort Flora of Ireland and that 

 of the S.W. coast of England, the Atlantic Islands, and West Indies are 

 Hookeria laetevirens, Hook., and Tayl. ; Jubiila Htiichinsiae, Hook. ; 

 Radula voluta, Tayl. ; and Diiniortiera hirsuta, var., irrigua, Tayl. ; the 

 three last-named being liverworts. 



Scapania nhnbosa, Tayl., also a liverwort, has only been found on Bran- 

 don Mountam (Co. Kerry), and in one locality on the West coast of Scot- 

 land. 



Of other rare British species of mosses found in Ireland may be mentioned : 

 Bartraniidula Wiisoni, B. and S. ; Leptodontiuni recurvifoliwn, Lindb. ; 

 Hypnum micnns, Wils. ; H. demiscum, Wils. ; Glyphomitrium Daviesii, 

 Brid. ; and Grininiia conferia, var., pruinosa, Braith. ; the two latter species 

 being abundant on the crumbling basaltic rocks of County Antrim. 



The rarer Irish Hepaticae are : — Lejeiinea microscopica, Tayl. ; Radula 

 Carringtonii, Jack. ; i lasniatocolea ciincifolia. Hook. ; and Acrobolbns 

 Wilsoni, Nees. 



The beautiful liverwort, Plagiochila anibagiosa, Mitten., found early in 

 the last century by Miss Hutchins of Bantry, has not been re-discovered. 

 The Rev. C. H. Waddell, M.A., of Samtfield, Co. Down, founder of the 

 British Moss Exchange Club, has supplied particulars as to the mosses and 

 the more important moss literature : — 



Dawson, Turner, Muscologiae Hibemkae Spicilegimn, 1804. 

 Taylor, in Mackay's Flora Hibernica, 1836. 



MoORE, D., " Synopsis of Mosses of Ireland, 1872 " {Proc. R.I. A). 

 Moore, D., " Irish Hepatic^, 1876 " {Proc. R.I. A., ser. 2, vol. 2.).* 

 Stewart and Corry, Flora of N.E. of Ireland, 1888. and Supplement, 



1895- 



Lett, Mosses of Mourne Mountains, 1889. 



The writer in the " Irish Peat Question " {^Economic Procs. R.D.S.) gives 

 c\ key for the recognition of the species of the peat-moss, Sphagmim, 

 found in Ireland. 



The Phycologia Britannica of the late W. H. Harvey, the Professor of 

 Botany to the Royal Dublin Society (a chair now continued in the Royal 

 College of Science, Dublin), and in Trinity College, Dublin, is still the 

 standard work in English on British Marine Algae. Harvey gives an illus- 

 trated account of 360 species, without special reference to their distribution 

 ni Ireland. In 1890 the "Revised List of British Marine Alg« " {^Annals 

 of Botany) by Holmes and Battery, gave a list of 560 (now 700) species, of 

 which 230 are recorded as occurring in Irish waters. Harvey's invaluable 

 collections of marine algae are preserved in the Trinity College Herbarium, 

 DubHn, under the charge of Prof. E. P. Wright, M.D., who has himself 

 described several species, new to science, in Ireland. It was the writer's 

 intention to bring our knowledge of the Irish weeds to the level of that in 

 Great Britain, but the claims of economic botany (peat, osiers, plant-dis- 

 eases, etc.), have intervened and stopped the work. With the help of 

 several former students — Miss R. Hensman more especially, H. Hanna, 

 M.A., and Miss M. C. Knowles — reports on various groups of algae have 

 appeared during the past ten years. Thus the Brown Algas (Irish Phae- 

 ophyce£e, Procs. R.I. A., 3rd ser. vol. 5, No. 3, 1899), now number 113, 40 



* Dr. Moore's collections of mosses and liverworts are preserved in the Herbarium of the_ 

 Science and Art Museum, Dublin. 



