
THE BRITTLE BLADDER FERN. 
Channel.—Wiltshire: Box Quarries, Dr. Alexander. 
Thames.= Surrey : Albury, T. M. 
Severn.— Warwickshire: Arbury. Monmouthshire: Pen-y-garn 
near Pont-y-pool, and on Mynydd-maen, T. H. Thomas; Skirrid 
Vawr near Abergavenny. Herefordshire: The Dowards on the 
Wye. Staffordshire : Ecton Tor, Rev. A. Bloxam. 
Trent.—Derbyshire: Dovedale, S. Buckland ; Matlock Baths. 
Mersey.= Cheshire. Lancashire. f 
Humber.—Yorkshire : Settle; Wensleydale, C. H. Compton. 
Tyne.—Durham : Cauldron Snout. Northumberland: Linhope, 
Cheviot Range, Rev. R. Taylor ; Mitford Church, near Morpeth. 
Lakes.—Cumberland: Borrowdale, Miss Wright; Egremont, J. 
Robson; Ullswater, G. B. Wollaston. Westmoreland: Kendal; 
Windermere, F. Clowes; Arnside Knot, H. D. Geldart ; Fairfield 
near Ambleside. N. Lancashire : Silverdale. 
S. Wales —Glamorganshire : Pont-nedd-Vechn ; Abergavenny, E. 
Lees ; Glyn Neath, E. Lees. Brecknockshire : Brecon, E. Williams. 
N. Wales.—Anglesea, Rev. H. Davies. Denbighshire: Llan- 
gollen; near Wrexham ; Ruthin, T. Pritchard. Flintshire: Castle 
Dinas Bran, H. Shepherd. Montgomeryshire: Craig Breidden, 
Rev. W. A. Leighton. Carnarvonshire: Llanberris; precipices of 
the highest peak of Snowdon, R. Barrington; Penmaen Mawr, &c. 
W. Lowlands.—Dumfries-shire : Moffat Dale, P. Gray. Kirkeud- 
brightshire : Cluden Hills (formerly), P. Gray. 
E. Lowlands. —Linlithgowshire: Woodcock Dale Wood, Dr. Balfour. 
E. Highlands.—Stirlingshire: banks of Loch Lomond. Forfar- 
shire: Glen Isla, H. M. Balfour. Perthshire: Ben Lawers, 7. M. 
Inverness-shire: Kingussie. Aberdeenshire: Braemar, A. Oroall. 
W. Highlands.—W. Inverness-shire: Ben Nevis. 
N. Highlands —Caithness: Morven, T. Anderson. 
N. Isles.—Orkney : Hoy, T. Anderson. 
-= Ulster.— Antrim : rocks at Carrickfergus, Mr. Templeton. Done- 
gal, R. Barrington. 
4. decurrens (M.). This form is intermediate in aspect and 
character between dentata and Dickieana, approaching the latter in 
having the pinne deflexed, and the pinnules decurrent, but differing 

