698 Proceedings of the Royal Irish Academy. 



Species New to Disteict 9. 



Banunctilus circinatus. Crepis taraxacifolia. 



,, pseudo-fluitans. Yeronica hedersefolia. 



Erysimum cheiranthoides. * ,, buxbaumii. 



Polygala depressa. ^Linaria minor. 



Lychnis vespertina. Rumex hydrolapathum. 



Arenaria serpyllifolia. Euphorbia exigua. 



Sagina apetala. Potamogeton zizii. 

 Medicago lupulina. ,, flabellatus. 



Lathyrus palustris. ,, filiformis. 



Prunus avium. Hydrocharis morsus-ranse^ 



E.osa arvensis. Elodea canadensis. 



Myriophyllum spicatum. Scirpus acicularis. 



Pimpinella saxifraga. Carex paniculata. 

 Sium latifolium. ,, pseudo-cyperus. 



,, angustifolium. Glyceria aquatica. 



Scandix pecten-veneris. Sclerochloa rigida. 



Galium uliginosum. Isoetes lacustris. 



Valerianella dentata. Equisetum maximum. 



Carduus tenuiflorus. Chara tomentosa. 

 Carlina vulgaris. 



Taking the species in order, the rarest and most interesting dis- 

 covered were, Papaver argemone and hyhridum, thus extending the range 

 considerably to the west, where this genus is rare. A form of Viola 

 canina grew in the bogs near Clonmacnoise, which bears some resem- 

 blance to 5^«_^wma, but was not that variety. StellariaglaucawdiS-^leiiiiivl. 

 Wiamnus catharticus was very common, but R. frangula was not seen. 

 Lathyrus palustris was specially abundant in a large meadow on the left 

 bank of the Inny, going towards Lough Eee, forming a considerable 

 portion of the vegetation. Rubus saxatilis, at Yew Point and some- 

 other places, assumed puzzling forms. Myriophyllum verticillatum was 

 gathered near Ballybay. Cicuta virosa occurred near Lanesborough. 

 Sium angustifolium was less frequent than S. latifolium (this was also 

 the case at Lough Erne), though in Great Britain the reverse is true. 

 Galium uliginosum was noticed on the west shore. It dries green, and 

 is totally different from any form of G. palustre. When the " Cybele 

 Hibernica" was written, doubts were entertained as to whether it was 

 really an Irish plant, but it has since been found in Westmeath. Crepis 

 taraxacifolia, a species common about Dublin and Kingstown, where 

 it is of recent introduction, and is extending on the east coast, was 

 gathered near Athlone, probably introduced by means of the railway, 

 along which other species have also spread westward. In America 

 European ''-colonists" extend with wonderful rapidity along the- 

 •western railways. Hieracium umhellatum, a rare species, and inte- 



