380 HISTORY OF BRITISH FERNS. 



Channel. — Hampshire. Dorsetshire. Wiltshire. Tilgate 

 Forest, Sussex. 



Thames. — Tring, Hertfordshire. Hampstead, Middlesex. High- 

 down Heath ; Caesar's Camp, Farnham ; Woking Common ; 

 between Dorking and Leith Hill ; Addington Hills, Croy- 

 don ; and other parts of Surrey. Oxfordshire. [High 

 Beech, Essex.] 



OusE. — Norfolk. Gamlingay, Cambridgeshii'e. Bedfordshire. 



Severn. — [Coleshill, Warwickshire.] Worcestershire. Staf- 

 fordshire, Stiperstone, Shropshire. 



S. Wales. — Glamorganshire? Plinlymmon, Cardiganshire. 



N. Wales. — Cader Idris, Merionethshire. Denbighshire. Snow- 

 don, Carnarvonshire. 



Trent. — Charnwood Forest, Leicestershire. Nottinghamshire. 

 Denbighshire. 



Mersey. — Todmorden ; Simmons-wood Moss, Lancashire. 

 Cheshire. 



Humber. — Frequent in the N. and W. Ridings of Yorkshire. 



Tyne. — Northumberland. Durham. 



Lakes. — Mountains of Cumberland. Langdale, Westmoreland. 



W. Lowlands. — Dumfries-shire. liircudbrightshire. Renfrew- 

 shire. Lanarkshire. 



E. Lowlands. — Peebleshire, Roxburghshire. Pentland Hills, 

 Edinburghshire. Berwickshire. 



E. Highlands. — Clackmannanshire. Kinross-shire. Fifeshire. 

 Clova Mountains, Forfarshire. Ben Lawers, Perthshire. 



