366 Mr Mackay on the Botany of Ireland. 



county of Mayo, on Croagh Patrick, and in Erris. Saxifraga 

 oppositi/blia, which grows plentifully in the Donegal and Sligo 

 mountains, is also to be met with on the range of mountains 

 which separates Connemara from Joyce country. The isles of 

 Arran afford the beautiful and delicate Admntum capillus-Ve- 

 neris, or true maiden-hair fern, in the greatest profusion, in 

 the crevices of the limestone rocks, of which the islands are com- 

 posed. It is also found more sparingly near Roundstone and 

 on the high mountain range between Tralee and Dingle, in the 

 county of Kerry. 



In a recent botanical tour through Connemara and other parts 

 of the county of Galway, the following plants were added to the 

 Flora of that country : — Carex filiformis and Cai'cx limosa in 

 boggy ground near Woodstock, four miles from Galway, on 

 the road to Outerard, and on a small limestone hill opposite to 

 it Orohanche rubra, hitherto only found on trap-rocks, near 

 Belfast and Magilligan. The genus Orohanche^ of which we 

 have three species indigenous to Ireland, is generally supposed 

 to be parasitical. One species, Orohanche major, grows on the 

 roots of the common broom ; hence the English name broom- 

 rape. Another species, Orohanche minor, is in this country in- 

 variably found near the roots of ivy, and does not appear to dif- 

 fer from the species known by that name in England, which is 

 there always found among clover. Orohanche ruhra, however, 

 does not appear to derive its nourishment from any other plant, 

 but is generally found growing in the crevices of rocks. 



By the side of the Outerard road, near Ross, and in Ross 

 woods, Plmpinella magna was found in great abundance. A 

 new habitat for the Erica mediterranea was observed by Simon 

 Foot, Esq., Joseph Hooker, Esq., and others, on the side of 

 Mulrea mountain near the Killeries ; and on the cliffs near the 

 summit Oxyria reniformis was found for the first time. 



Erica Mackaiana was also seen in full flower about half-way 

 between Cliffden and Roundstone, where it was originally dis- 

 covered. It promises to be a great acquisition to our garden 

 collections. 



Silene Anglica was found abundantly in corn-fields, and by 

 the way- side, two miles to the west of Outerard. It had previ- 

 ously been observed sparingly in (he county of Donegal. 



