318 
HISTORY OF BRITISH FERNS. 
Idwal, Clogwyn-y-Garnedd, Penmaen Mawr (var. dentata)^ 
and elsewhere, in the Snowdon district (form near alpina), 
Carnarvonshire. 
Trent, — Leicestershire. Oxton and Bui well Churches ; Work- 
sop, Nottinghamshire. Fairfield (with var. dentata) ; Dove- 
dale (var. dentata) ; Matlock Baths (with vars. dentata and 
angustata) ; Castleton ; Lover’s Leap near Buxton, Derby- 
shire. 
Mersey. — Rostherne Church, Cheshire. Lancashire. (Var. 
dentata in both counties.) 
Humber. — About Settle (with vars. dentata and angustata) ; Rei- 
vaulx Abbey ; Helmsley ; Egglestone bridge on the Greta ; 
Dropping Well, Knaresborough ; Anston rocks near Shef- 
field ; Castle Howard Park ; Halifax ; Ayrsgarth Bridge, 
Wensley Dale (var. angustata)^ and many other parts of 
Yorkshire. 
Tyne. — Cauldron Snout (var. dentata)^ &c., Durham. Halt- 
whistle ; Mitford Church near Morpeth (with var. dentata)^ 
B,S,E, ; Lintrope, Cheviots (with var. dentata)^ Bev, R, 
Taylor^ Northumberland. 
Lakes. — Lamplugh, J, Dickenson^ Borrowdale (var. 
dentata). Miss Wright ; Holm Rock ; Mickledore ; Braith- 
waite Brow, Egremont (var. dentata), J, Robson ; and else- 
where, Cumberland. Kendal (with var. dentata) ; Winder- 
mere (var. interrupta), F, Clowes, and other parts of West- 
moreland. Silverdale, N. Lancashire (var. dentata). 
