Hart — On the Flora of Lamhay Island. 685 



I laid particular stress tipou " the absence of turfy bogs and scarcity 

 of damp ground which entails a great want of marsh and heath plants, 

 sedges, and nishes," &c. The result of this is that Mr. More can 

 enumerate ninety-two plants upon Bofin which do not occur upon 

 Aran, against 161 Aran plants which are absent from Bofin. Of these, 

 the majority are, in all probability, absent from Aran in consequence of 

 this accidental want of marshy ground and in no respect from climate, 

 geological structure, or geographical situation. The omission of this 

 consideration renders the contrast between the two floras less strikingly 

 in favour of the Aran limestone flora than it may be fairly estimated 

 by attaching weight to the absence of unimportant plants. 



Mr. More enumerates 303 varieties, or, say 295 species, as found 

 upon Inish-Bofin. My Lambay list contains 291 species. Deducting 

 from each of these totals those plants which are probably introduced, 

 there remain 252 native species for Bofin, 258 for Lambay. Consi- 

 dering the superior size of Inish-Bofin and its much more diversified 

 surface-conditions, the majority in favour of Lambay illustrates well 

 the richer flora of the east of Ireland. A few plants, such as Sisym- 

 hrium officinale, Capsella lursa-imdoris, Galium aimrine, and three 

 species of trefoil are, I believe, native on Lambay, though most likely 

 only colonists in the far west of Ireland. 



In the following comparative lists several commoner aquatic species 

 aL'eady mentioned are omitted from the Bofin plants, as not tending 

 to illustrate the essential differences between the two floras : — 



COMPAEATIVE VIEW OF FLOEAS OF INISH-BOFIIS" 

 AND LAMBAY, 



Including only Hants ^robally native. 

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

 Eanttkculace^ . 

 Ranunculus ficaria. 

 Caltha palustris. 



Nymphs ACE^. 



I NuiyJiar lateum. 



Cetjcifee^. 

 Sisymbrium officinale. 

 Aralis thaliana. 

 Braha verna. 



ClSIACE^. 



I Helianthemum guttatum. 



VlOLACE^. 



Viola liirta. I Viola ])al>.istr is. 



V. tricolor. V. canina. 



