i897-] CoivGAN. — 071 ike Flora of the Shores oj Lough Derg, 193 



vegetation, not one of them lacked the charm of an absolutely 

 unadulterated indigenous flora. 



The water-plants of lyough Derg proved on the whole dis- 

 appointing, the lake-bed being in general too rocky to favour 

 the growth of a luxuriant aquatic flora. Those which were 

 observed while cruising amongst the islands or which came up 

 on the drag, which was freely used in all the likely shallows 

 will be noticed in the following detailed remarks on the more 

 interesting species of the lake flora. Not a single entry of 

 any of the truly aquatic Ranunculi occurs in my notes of the 

 week's work. 



The whole of the eastern shore of Lough Derg belongs to 

 the County Tipperary, and to District VII. of Cybele Hibernica, 

 the western shore belongs partly to County Galway, partly to 

 County Clare, and is all included in District VI. The district 

 numbers are prefixed to each record in the following list, all 

 of those marked VII. falling within the County Tipperary. 



ThallctruiYi colllnum, Wallr.— VII. Abundant in rock-clefts at 



Slevoir Point. 

 Ranunculus Llngrua, Linn. — VI. Abundant by the Shannon above 



Portumna Bridge, Galway. 

 Nuphar luteum, Sm.— VI. and VII. Not infrequent on both sides of 



the lake. 

 Nymphaea alba, Linn. — VI. Much rarer than the preceding, only 



noticed near Portumna. Appears to be decidedly calcifuge and to 



prefer a peaty bottom. 

 Nasturtium amphiblum, R. Br. — VI. At Killaloe by the canal and 



in drains leading to the Shannon. 

 Seneblera cJIdyma, Pers. — VII. By the old Castle at Dromineer. 

 Viola odorata, Linn. — VII. Under hedges by the Nenagh road near 



Dromineer, looking wild. 

 Arenaria trincrvia, Linn.— VI. At Ballyvally near Killaloe, Clare, 



and— VII. AtGortmore. 

 Malva sylvcstris, Linn. — VII. Round the old church and castle at 



Dromineer, obviously introduced as it usually appears to be in west 



Ireland. 

 Geranium lucldum, Linn.— VII. Drominagh Point ; apparently quite 



rare round Lough Derg, though usually abundant on the limestone 



in west Ireland. 

 Rhamnus cathartlcus, Linn.— VI. Church Island, Stony Is., Rin- 



maher. Horse Islands, Hare Is., Corrikeens, Cribby Is., &c., Galway ; 



Long Is., &c., Clare.— VII. Bounla Islands, Ryan's Point, Scilly 



Is. &c., Tipperary ; the prevailing shrub of the lake-shores and 



islands, occasionally becoming a small tree from 10 to 12 feet high. 



