320 HISTORY OF BRITISH FERNS. 



THAMES. Hertfordshire. Middlesex. Kent. Surrey. Berk- 

 shire. Buckinghamshire. Oxfordshire. Essex. 



OUSE. Suffolk. Norfolk. Cambridgeshire. Bedfordshire. 

 Huntingdonshire. Northamptonshire. 



SEVERN. Warwickshire. Gloucestershire. Herefordshire. Wor- 

 cestershire. Staffordshire. Shropshire. 



S. WALES. Brecknockshire. Pembrokeshire. Glamorganshire. 

 Carmarthenshire . 



N. WALES. Anglesea. Denbighshire. Carnarvonshire. 



TRENT. Leicestershire. Nottinghamshire. Derbyshire. 



MERSEY. Cheshire. Lancashire. 



HUMBER. Yorkshire (with var. undulatum). 



TYNE. Northumberland. Durham. 



LAKES. Cumberland. Westmoreland. Isle of Man. 



W. LOWLANDS. Dumfriesshire. Kir cudbright shire. Wigton- 

 shire. Ayrshire. Eenfrewshire. Lanarkshire. 



E. LOWLANDS. Edinburghshire. Berwickshire. 



E. HIGHLANDS. Eifeshire. Eorfarshire. Kincardineshire. 

 Aberdeenshire. Nairnshire. Morayshire. 



W. HIGHLANDS. Argyleshire. Isles of Islay, Cantyre, and 

 Skye. 



N. HIGHLANDS. Sutheiiandshire. 



N. ISLES. Isles of Bowsay, Orkney, rare, E. Heddell. Shet- 

 land. 



CONNAUGHT. Galway. Arran Isles. Sligo. 



