LOCAL DISTRIBUTION OF FERNS. 
275 
Northern Isles. Hoy; Orkney; North Marin; Shet- 
land. 
Ulster. By the Glenarve, near Cushendall, and other 
parts of Antrim. Waterfall above Lough Esk, Done- 
gal. Slieve Bignian; near Slieve Croob; Black 
Mountain, Down. Ness Glen, Londonderry. 
Leinster. Cariingford Mountain; South Powerscourt 
Waterfall, Wicklow. 
Munster. Between Killarney and Kenmare ; Mucruss, 
Kerry. 
POLYPODIUM ROBEBTIAIYUM. 
Peninsula. Bath; Cheddar cliffs; Mendip Hills; 
about Clevedon and Yatton; Hinton Abbey, Somer- 
setshire. 
Channel. Box Quarries; Corsham, Wilts. 
Thames. Oxfordshire. 
Severn. Besborough Common; banks of the Wye, 
near Whitchurch ; Forest of Dean ; Windlass, near 
Cheltenham ; Cleamcloud ; Cotswold Hills ; Ciren- 
cester; Leigh Wood, near Bristol, Gloucestershire. 
Worcestershire. Staffordshire. 
South Wales. Merthyr Tydvil, Glamorganshire. 
North Wales. Llanferras, Denbighshire. 
Mersey. Lancaster; Barnley; Broadbank, Lancashire. 
Trent. Matlock; Buxton; Bakewell, Derbyshire. 
Humber. Ingleborough ; near Settle; Auster Rocks; 
Arnecliffe; Gordale; Ravenscar ; Waldenhead; Swale- 
dale, Yorkshire. 
Tyne. Falcon Clints, Durham. 
