104 
other botanical friends, whose names I have recorded with their 
discoveries. But, as no Flora Hibernica has yet appeared, it may 
perhaps be desirable to publish a general catalogue of the plants of 
the country, which may supply, in some degree, the place of such a 
work. The number of genera enumerated is 374, and of species 
935: the corresponding British genera amount to 457, and the spe- 
cies to 1487. When some parts of the country, hitherto imperfectly 
explored, shall have been carefully examined, a considerable num- 
ber of species may still be added to our Flora. 
The arrangement I have followed is the Linnean; and I have, for 
the most part, adopted the names as given in that popular and use- 
ful little work, “‘ Compendium Flore Britannic,” by Smith, 2d. edi- 
tion. In a few instances, 1 have adopted some judicious alterations 
made by Dr. Hooker in his “* Flora Scotica.” In the difficult 
genus Saxifrage, I have also followed the arrangement of Sir James 
K. Smith, in his admirable English Flora, two volumes of which 
have been lately published; and I have given some of his descrip- 
tions of my new Irish species and varieties ;—in some cases however, 
with a few variations, together with some remarks and additional 
references. This I have done as several species and varieties, 
described in the above work, have not appeared before in any 
British Flora. ‘Three varieties of Saxifraga Geum (one of which 
I am strongly inclined to consider a distinct species) are now for 
the first time described. A few plants, such as Plantago Arenaria, 
Ammi Majus, Clypeola Jonthlaspi, &c. which were found at Port- 
marnock sand-hills by me and some of my pupils, in several excur- 
sions made to that interesting spot, (and which have not as yet been 
assigned a place in any British Flora) I have referred to the respec- 
tive foreign authors who describe them. 
