EQUISETUM ARVENSE. 
865 
Thames. —Hertfordshire. Middlesex. Kent. Surrey. Ox¬ 
fordshire. Berkshire. Essex. 
Ouse. — Suffolk. Norfolk. Cambridgeshire. Bedfordshire. 
Huntingdonshire. Northamptonshire. 
Severn. — Warwickshire. Gloucestershire. Herefordshire. 
Worcestershire. Staffordshire. Shropshire. 
S. Wales. —Glamorganshire. Pembrokeshire. Carmarthenshire. 
N. Wales. —Anglesea. Denbighshire. Flintshire. 
Trent. —Leicestershire. Rutland. Lincolnshire. Nottingham¬ 
shire. Derbyshire. 
Mersey. —Lancashire. Cheshire. 
Humber. —Yorkshire. 
Tyne. —Durham. Northumberland. Isle of Man. 
Lakes. —Gosforth, Cumberland, J. Robson. 
W. Lowlands.— Dumfries-shire, Kirkcudbrightshire. Lanark¬ 
shire, 
E. Lowlands. —Berwickshire. Haddingtonshire. Edinburgh¬ 
shire. Linlithgowshire. 
E. Highlands. —Stirlingshire. Clackmannanshire. Kinross- 
shire. Fifeshire. Perthshire. Forfarshire. Kincardine¬ 
shire. Aberdeenshire. Morayshire. 
W. Highlands. —Argyleshire. Dumbartonshire. Isles of Islay 
and Cantyre. 
N. Highlands. —Ross-shire. Sutherlandshire. Caithness. 
N. Isles. —Orkney, T. Anderson. Shetland. 
W. Isles. —Roddal, Harris. 
