LOCAL DISTRIBUTION. 331 



ISOETES LACUSTRIS, Linnxus. 



SEVERN. [Shropshire.] 



S. WALES. Lake below Brecon beacon, Brecknockshire. Gla- 

 morganshire. 



N. WALES. Lakes of Denbighshire. Merionethshire. Ogwen ; 

 Llyn-y-cwm ; Lakes of Llanberis, &c., Carnarvonshire. 



HUMBER. Castle Howard lake ; Foss reservoir near Coxwould, 

 Yorkshire. 



TYNE. Prestwick Carr, Northumberland. 



LAKES. Bydal, and other lakes of Westmoreland. Ulleswater ; 

 Eloutern Tarn, near Buttermere ; Crummock water ; Der- 

 went water ; Wastwater, &c., Cumberland. Conistone, 

 N. Lancashire. 



E. HIGHLANDS. Stirlingshire. Eifeshire. Loch Tay ; Loch 

 Lubnaig, Perthshire. Loch Brandy ; Loch Whirrall, near 

 Kettin, Eorfarshire. Loch Callader, Aberdeenshire. 



W. HIGHLANDS. Loch Sloy, Ben Yoirlich, Dumbartonshire. 

 Lakes in the Isles of Skye and Bute. 



N. HIGHLANDS. Sutherlandshire. 



N. ISLES. Kirkwall (near the sea), Orkney, T. Anderson. 



ULSTER. Lakes in the Bosses, Donegal. Castle Blaney lake, 

 Monaghan. 



CONN AUGHT. Lakes of Connemara. 



LEINSTER. Upper Lough Bray ; Glendalough, Wickiow, 



