690 



Proceedings of the Royal Irish Academy. 



Lambay Plants not on Inish-Bofin. | Inisli-Bofin Plants not on Lambay. 



CrPERA-CEiE. 



Blysmus rufus. 

 Carex disticha. 

 C. vulgaris. 

 C. vulpina. 

 C. hiria. 



DigrapMs arundinacea. 

 jAlopecurus pratensis. 

 \Aira ccespitosa. 



Solcus mollis. 



Sclerochloa rigida. 



Briza media. 



Festuca sciuroides. 



Triticum junceum. 



Scirpus fluitans . 

 Rhyncliospora alba. 

 Eleocharis multicaulis . 

 Carex lyulicaris. 

 C. stellulata. 

 C. binervis. 



Geajjtne^. 



Psamma arenaria. 

 Calamagrostis epigejos. 

 Kmleria crisfata. 

 Sclerochloa loliacea. 

 Festuca pratensis. 



FiLICES. 



Scolopendrium vulgare. 

 Aspidium angulare. 

 Ophioglossum vulgatum. 



Asplenium ruta-muraria . 

 Blechnum boreale. 

 Lastrcea mnula. 

 Osmunda regalis. 



Ltcopodiace^. 



I Isoetes ecTiinospora. 



Thus Lambay contains ninety-one, and Inish-Bofin sixty -four cha- 

 racteristic peculiar plants. In order to understand more thoroughly 

 the different natures of the two floras, I will arrange them according 

 to Mr. Watson's types. The Lambay flora will be found to contain 

 forty-nine species of the British or commonest type not occurring upon 

 Bofin, as against fifty-five British type plants on Bofin not occurring 

 upon Lambay. And this is what might have been foreseen, the larger 

 island containing the greater variety of common species. There are 

 about one hundred and sixty-five ' British type ' species common to 

 both islands. 



The undermentioned species peculiar to either island belong to 

 Watson's English type,, or are " inclining to " his English type : — 



Lambay. 



Sisymbrium thalianum. 

 Viola hirta. 

 Cerastium arvense. 

 Geranium sangxiineum. 



BoFIIf. 



JJ^uphar lutea. 

 Elatine hexandra. 

 Hypericum androsasmum. 

 H. elodes. 



