THE FORKED SPLEENWORT 115 



at the backs of the widest leafy part of the frond, the 

 sori distinct and elongated, and covered when young by 

 elongated indusia, but when these fall off becoming 

 confluent upon nearly the whole under side of the frond, 

 and turning then to a dark-brown colour. 



HABITATS. Moist and shady rocky crevices; old 

 walls in positions sheltered by projecting pieces of stone 

 or rock ; dark, moist, shady holes or recesses in walls or 

 rocks hence, generally, this species is inconspicuous, 

 and requires to be carefully sought for. 



WHERE FOUND. In England, in Cornwall, Cumber- 

 land, Devon, Northumberland, Somerset, Westmoreland, 

 and York ; in Cornwall, near Trengwainton Cairn (F. T. 

 Richards) ; in Cumberland, Borrowdale, Helvellyn, 

 Honister Crags, Keswick, Vale of Newlands, Patterdale, 

 Scawfell, and Wastwater ; in Devonshire, on Exmoor ; 

 in Northumberland, in crevices of basaltic rocks of 

 Kyloe Crags ; in Somersetshire, near the little village of 

 Culbone ; in the county of Westmoreland, at Ambleside ; 

 and in Yorkshire, upon the rocks of Ingleborough. In 

 Wales, in the counties of Caernarvon, Denbigh, and 

 Merioneth. In the county of Caernarvon the habitats 

 of Asplenium septentrionale are in the following places : 

 Bettwys-y-Coed, Capel Curig, Carnedd Llewellyn, Craig 

 Dhu, Pass of Llanberis, Llyn-y-cwm, Moel Lechog, and 

 Pont-y-Pair ; in the county of Denbigh, rocks at Llan 

 Dethyla in the neighbourhood of Llanrwst. In Merioneth, 

 at Dolgelly (F. T. Richards). In Scotland, Aberdeen, 

 Edinburgh, Perth, and Roxburgh ; in Aberdeen, on rocks 

 at the Pass of Ballater ; in the county of Edinburgh, on 

 rocks at Arthur's Seat, at Blackford Hill, and on other 

 rocks in the same neighbourhood ; in Perthshire, in the 

 vicinity of Dunkeld ; and in Roxburghshire, at Jedburgh 

 and on the Minto Crags. No habitats of this species 

 have been recorded in Ireland. It grows at various 

 altitudes up to three thousand feet above the sea-level. 



