376 nisTORY OF British ferns. 



E. Lowlands. — Near N. Berwick, Haddingtonshire. 

 E. Highlands. — Sands of Barrj', Dundee, Forfarshire (var. 

 arenarium). Banks of the Dee, Kincardineshire (with var. 

 IVilsoiii). 

 N. Highlands. — Tain, Ross-shire, B.S.E. 



Leinster. — Portmarnock Sands ; Royal Canal (var. Wilsoni), 

 , both near Dublin. MuUingar, Westmeath (var. Wilsoni), 

 R. W. Rawson. 

 MuNSTER. — Mucruss, Killaruey, Kerry (var Wilsoni). 



Isoetes lacustris, Linnceus. 



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 Cox- 

 wold, Yorkshire. 



Tyne. — Prestwick Car, Northumberland. 



Lakes. — Rydal, and other Lakes of Westmoreland. Ulleswater ; 

 Floutern Tarn, near Buttermere ; Crummock Water ; Der- 

 went Water ; Ennerdale ; Wastwater, &c., Cumberland. 

 Conistone, N. Lancashire. 



E.Highlands. — Stirlingshire. Fifeshire. Loch Tay ; Loch 

 Lubnaig ; Ben Voirlich, Perthshire. Loch Brandy ; Loch 

 Whirral, near Kettin, Forfarshire. Loch Callader, Aber- 

 deenshire. 



