532 Proceedings of the Royal Irkh Academy. 



restricted by the nature of the ground over ■which, my observa- 

 tions extended, which is almost entirely heathy and rocky, agricul- 

 tural weeds being thereby, to a great extent, excluded. Nevertheless, 

 there still remains the fact that a great degree of sameness was found 

 to characterize the vegetation all over these mountains, and that the 

 plants which have, in Britain, the widest range immensely prepon- 

 derate. This will be shown if we analyze the list which follows, and 

 compare its constituents with the entire Irish flora, as given in the 

 " Cybele Hibernica." For the sake of clearness I shall, in stating 

 the proportions as regards the prevalence of the several British types, 

 disregard fractions ; such a degree of exactness not being essential, 

 seeing that there is often a doubt as to which type a plant should be 

 referred. The Irish flora contains representatives of each of Watson's 

 types of British vegetation, with the addition of a " Hibernian type," 

 or a group of plants which do not occur in Great Britain. None of 

 this latter group are included in my enumeration, and plants of 

 Watson's "Grermanic type" are also entirely absent. The "Atlantic 

 type" forms four per cent, of the Irish flora, but only one per cent, 

 of those on my list. Plants included in the " Highland type " make 

 five per cent, of the species given in the " Cybele Hibernica," but 

 only two per cent, of those in our district. Plants of the '' Scottish 

 type " constitute seven per cent, of Irish plants, but three per 

 cent, only of this catalogue. The "English type" claims about 

 twenty-four per cent, of the entire Irish flora, but only five per cent, 

 of those in our limited area. The Leguminosce and Ldbiatm are espe- 

 cially strong in plants of the English type, but the paucity in this 

 district of plants of these orders is apparent on reference to the sub- 

 joined list. Lastly, the " British type " of Watson, which includes 

 the species most widely spread, and usually the niost abundant, sup- 

 plies about fifty-eight per cent, in number of the plants of Ireland, 

 but gives a proportion of eighty-nine per cent, as regards this 

 mountain district of Fermanagh and Cavan. 



A very few plants which flower in early spring were not seen 

 by me, and a few others could, no doubt, be added by any bota- 

 nist having more protracted opportunities for the search; but the 

 enumeration here given may be taken as substantially the flora of 

 the district to which it refers. The only certain addition to the 

 Irish flora, here recorded, is Potamogeton %i%ii (Roth), which I found, 

 in small quantity only, in county Fermanagh. I have no doubt, 

 however, but that this segregate will be found in other parts of the 

 country, when carefully looked for. Professor Babington thinks that 

 a bramble which I found in Fermanagh belongs to Ruhm emersistylus 

 (Mull.) - R. briggsii (Blox.) As the specimens gathered are rather 

 scanty, and as Professor Babington does not speak with absolute 

 certainty, there must still remain some doubt as regards this form. 

 As this is an interesting plant, not previously recognized in Ire- 

 land, it is worthy of attention. 



