556 Proceedings of the Royal Irish Academy. 



In many species we noticed an unusual habit o£ growth, as in a 

 large-flowered variety of Campanula rotundifolia, which my friend, 

 Professor Babington, pronounces to be a singularly fine form, and the 

 most remarkable which he has seen. Euphrasia oificinalis, when on 

 the exposed grassy slopes, grows with a dense spike of firm, fleshy 

 leaves, and I have observed the same in Achill. Matricaria inodora, 

 on the wild rocky ledges of the clifi^s, offers a handsome flower as 

 large as Chrysanthemum leucanthemum. On the tops of the gravelly 

 hills. Erica tetralix, and Calluna vulgaris, grow close to the ground, 

 with their leaves crowded on a few short branches. Erythrsea cen- 

 taurium scarcely raises its blossoms above the rosette of radical leaves. 

 Agrostis pumila, and a very dwarf form of Plantago maritima, are 

 abundant, and many other examples might be given of a stunted 

 habit of growth. 



The rarest plants gathered were : 



Helianthemum guttatum. Eriocaulon septangulare. 



Calamagrostis epigcjos. Sparganium affine. 



Elatine hexandra. Isoetes echinospora. 



Sixteen are hitherto unrecorded, as occurring in District YIII. of 

 our " Cybele Hibernica," West Galway, and West Mayo, viz.: 



I Fumaria pallidiflora. Eubus villicaulis. 



X Sinapis nigra. f Arctium intermedium, 



Polygala depressa. * Salix Smithiana. 



Elatine hexandra. Calamagrostis epigejos. 



Yicia angustifolia. % Avena fatua. 



Eubus discolor. :j: Lolium temulentum. 



E.. thyrsoideus. Glyceria plicata. 



E. carpinifolius. Isoetes echinospora. 



When compared with that of Aran, which is typically a limestone 

 Elora, the vegetation of Inish-Bofin presents a striking contrast, as 

 will be best seen from the following list, which exhibits, side by side, 

 the plants which have been found in one only of the two islands. 

 The species most characteristic of each formation are printed in italics. 

 The plants which are not certainly native are marked with the usual 

 signs of '^', certainly, %, probably, and f, possibly, introduced; and 

 the few species which were gathered on Inish-Turk, though not in 

 Bofin itself, are enclosed in brackets. I have ventured to append a 

 mark of suspicion to some of the Aran plants whose nativity was left 

 unchallenged by Mr. Hart, but whose conditions of growth or distri- 

 bution are such as to give them the appearance of doubtful natives 

 in Aran. The abbreviation "col." (colonist), indicates weeds found 

 only in cultivated land, all of Avhich are generally admitted to have 

 been originally sown with the crops among which they now grow. 



