Contributions towards a Flora Hihernica. 4-37 



in two or three autumnal excursions by the late Dr. Wade 

 and Mr. M'Kay, a catalogue of all of which was published by 

 the last-mentioned gentleman in 1825. In climates favour- 

 able to vegetation, the variety of plants is generally propor- 

 tional to that of the soil and surface, and when it is known 

 that scarcely a rock of any extent has hitherto been dis- 

 covered, the prototype of which does not exist in this country, 

 as it already is that its mountains exceed for the most part in 

 elevation those of England, and are little inferior to those of 

 Scotland, we may confidently premise that its botany will, 

 when adequately investigated, be found equally respectable 

 with that of the sister countries. 



The following Plants do not appear in Mr, McKay's Catalogue. 



Valeriana dLent\t2L. Ann's-brook, Meath. 



Phalaris arundinacea. Margins of lakes, ditches, &c. ; common. 



This plant had been observed by Mr. M'Kay, but was omitted in his 

 list by mistake. 

 Potamogeton perfoliatum. Canals about Dublin, and in rivers and- 



lakes ; common in the north. 

 P.gramineum. Lakes in Fanet, Donegal. \ 



iScandix odorata. Way-sides and plantations; common* ' 



This plant may have been introduced ; but the like remarks will apply 

 to many received as indigenous. 

 Polygonum vivlparum. Northern declivity of Benbulben mountain, 



Sligo. 

 Pyrola rotundifolia. Glen-Idra, Derry. 

 Arenaria verna. Magilligan, Derry. 



A. trin<^rvis. Strabane Glen, Tyrone, and Glenade mountain, Leitrim. , 

 iSiibus Chamaemorus. Plentiful on Glen-Garro mountain, Tyrone. 

 Subularia aqudtica. Lough Carban, a little north-west of the Gap of 



Barnesmore, Donegal. 

 E'rvum tetrasp^rmum. Ann*s-brook, Meath. 

 Aspidium Z/onchitis. In a glen east of Lough Esk, Donegal, and oa 



Glenade mountain, Leitrim. 



New Habitats for Plants before observed. 



jScirpus aciculkris. Canal at Strabane, and margin of Lough Foy, Derry. 



Seslerk cserulea. On all the calcareous mountains of Leitrim and Sligo. 



Poa alpina var. vivipara. Benbulben, Sligo. 



£'''lvmus arenarius. Bundorn and Aranmore, Donegal. 



Galium boreale. Magilligan, Derry. 



Centunculus minimus. Rosses and Fanet, Donegal. 



Rhodiola millegrana. With the last. 



Drosera longifolia. Flow bogs; common. 



Phellandrium aquaticum. Canal near Dublin. 



Oxyria reniformis. Benbulben, Sligo. 



Pyrola media. Ards, &c., Donegal. 



Chrysosplenium alternifolium. Ballylast, Tyrone. 



iSaxifraga oppositifolia. Calcareous mountains of Leitrim and Sligo. 



S. aizoides. With the last. 



Silene acaulis. With the last two. 



jBubus suber^ctus. Common in Leitrim. 



R. saxatilis. Ards, &c., Donegal. 



