376 
HISTORY OF BRITISH FERNS. 
E. Lowlands. — Near N. Berwick, Haddingtonshire. 
E. Highlands. — Sands of Barry, Dundee, Forfarshire (var. 
arenarium). Banks of the Dee, Kincardineshire (with var. 
Wilsoni). 
N. Highlands. — Tain, Ross-shire, B.S,E, 
Leinster. — Portmarnock Sands ; Royal Canal (var. Wilsoni)^ 
both near Dublin. Mullingar, Westmeath (var. Wilsoni\ 
E. W, Rawson. 
Munster. — Mucruss, Killarney, 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 Llanheris, &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. LocliTay; Loch 
Lubnaig ; Ben Voirlich, Perthshire. Loch Brandy; Loch 
Whirral, near Kettin, Forfarshire. Loch Callader, Aber- 
deenshire. 
