428 Proceedings of the Royal Irish Academy. 



actually seen. A few, doubtless, were overlooked, and a very few of 

 the plants of early spring were missed ; but it is not allowable to 

 assume their occurrence, even though they be of the commonest types. 

 The whole number of species now put on record is 364, namely, 

 flowering plants 269, ferns and their allies 20, characeae 3, mosses 

 64, hepatics 8. The enumeration of the two latter groups is not to be 

 considered as at all complete, the hepatic^e not being specially sought 

 for, and the mosses which appear in winter remain unnoted. This 

 flora belongs almost entirely to District IX. of the Cylele Silernica, 

 and this being one of the best worked districts, but few new discoveries 

 could be made. The following, however, have not hitherto been pub- 

 lished in any list of plants in District IX., namely : — 



Medicago lupulina. Myriophyllum spicatum. 



Hubus leucostachys. ^gopodium podagraria. 



E.. hirtifolius. Arctium minus. 



R. villicaulis. Carex aquatilis. 



E. macrophyllus, Equisetum maximum. 



E. koehleri. Isoetes lacustris. 



E. lejeunii. 



The grouping of the species in the following list amongst the 

 larger orders of British plants shows considerable differences when 

 compared with the general flora of Ireland. Some orders have a 

 representation much in excess of what they could claim, if this flonila 

 were constituted similarly to the flora at large ; the most marked of 

 these being the Compositse, Scrophulariaceae, and Juncaceae. Of the 

 latter order this small district yields two-thirds of the species repre- 

 sented in Ireland ; rushes are everywhere, and in an abundance which 

 certainly is not exceeded in any other part of the country. To balance 

 this preponderance of some orders, it will be observed that there is a 

 corresponding deficiency in others, notably the Cruciferse, Labiatse, 

 Orchidacese, and Filices. 



Eegarding the geographical relations of this flora, it will be seen 

 that "Watson's British type claims the great mass of the vegetation, 

 the exceptions being few in number, confined to very narrow limits, 

 and nowhere occurring in abundance. Of Watson's English, type 

 only twenty can be enumerated, namely : — 



JSTuphar lutea. Carduus pratensis. 



^Nasturtium palustre. Scrophularia aquatica. 



Armoracia amphibia. Lysimachia vulgaris. 

 Hypericum androsasmum. Habenaria chlorantha. 



Trifolium minus. Juncus glaucus. 



Lythrum salicaria. Carex stricta. 



Cicuta virosa. Trisetum flavescens. 



Pulicaria dysenterica. Eestuca elatior. 



Bidens tripartita. Equisetum maximum. 



B. cernua. Polystichum angulare. 



