96 WHERE TO FIND FERN-. 



lobes. Fructification irregularly but abundantly distri- 

 buted over the under sides of the lobes, and consisting 

 of roundish sori, covered by inflated, bladder-like or 

 hood-like indusia, attached each by one side that 

 towards the base of the lobe and falling off when the 

 spores are ripened. The sori then frequently become 

 confluent, and cover the entire under sides of the fronds 

 with their rich-brown fructification. 



HABITATS. Shady and moist crevices of rocks, espe- 

 cially limestone rocks ; though, owing to its hardiness, 

 this species may be found in other rocky habitats. Its 

 rootstocks are often so firmly ensconced in the stony 

 chinks it loves best as to render their extraction difficult 

 or impossible ; but in other cases, when growing amongst 

 loose stones, it is easily obtainable. It grows also on 

 walls and on stony banks, always preferring their shady 

 sides. 



WHERE FOUND. In England, in the counties of 

 Chester, Cornwall, Cumberland, Derby, Devon, Dorset, 

 Durham, Essex, Gloucester, Hereford, Kent, Lancaster, 

 Leicester, Middlesex, Monmouth, Norfolk, Northampton, 

 Northumberland, Nottingham, Salop, Somerset, Stafford, 

 Suffolk, Surrey, Sussex, Warwick, Westmoreland, Wilts, 

 Worcester, and York. In Wales, in the counties of An- 

 glesea, Brecknock, Caerrnarthen, Caernarvon, Cardigan, 

 Denbigh, Flint, Glamorgan, Merioneth, Montgomery, 

 and Radnor. In Scotland, in the counties of Aberdeen, 

 Argyle, Ayr, Banff, Berwick, Caithness, Clackmannan, 

 Dumbarton, Dumfries, Edinburgh, Elgin, Fife, Forfar, 

 Haddington, Inverness, Kincardine, Kinross, Kirkcud- 

 bright, Lanark, Linlithgow, Nairn, Orkney, Perth, 

 Renfrew, Ross, Roxburgh, Selkirk, Stirling, and Suther- 

 land : also in the Hebrides. In Ireland, in the counties 

 of Antrim, Cork, Down, Galway, Kerry, Leitrim, Sligo, 

 and Wicklow. It is found growing at various heights 

 up to nearly four thousand feet above the sea-level. 



