318 
HISTORY OF BRITISH FERNS. 
Idwal, Clogwyn-y-Gamedd, 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 
angastata) ; Castleton; Lover’s Leap near Buxton, Derby¬ 
shire. 
Mersey. —Rostherne Church, Cheshire. Lancashire. (Yar. 
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 ), Rev. R. 
Taylor , Northumberland. 
Lakes. —Lamplugh, J. Dickenson. , B.S.E.; 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'). 
