10 ASPLENIUM SEPTENTRIONALE. 



interstices of loose stone walls, and by no means common in 

 our island. 



The fronds, which are glabrous, grow horizontally; they are 

 in form elongate-lanceolate, having one or two short bifid teeth, 

 and the apex terminating in a bifid point; the stipes smooth 

 and black near the base. They are a rich dark green, appearing 

 in March, and arrive at maturity in August, remaining green 

 all winter. Radicles long, fibrous, attached to a tufted fasciculate 

 rhizoma. The capsules are arranged in a continuous line on 

 each vein. 



The length of the frond is usually two inches. 



In Scotland, it is found in Forfarshire, Edinburghshire, Rox- 

 burghshire, and Perthshire. In Wales, in Caernarvonshire and 

 Denbighshire. In England, in Northumberland, Cumberland, 

 Westmorland, Yorkshire, Somersetshire, and Devonshire. 



Abroad it is a native of Hungary, Germany, Erance, Lapland, 

 Sweden, Denmark, Russia, Spain, and Italy. 



In potting this plant secure good drainage, and use a mix- 

 ture of peat, stones, and pieces of old mortar: water sparingly, 

 and keep it shaded from the sun's rays. 



It is contained in the Catalogues of Messrs. Backhouse, York; 

 A. Henderson, Pine-apple Place; E. G. Henderson, St. John's 

 Wood; Yeitch, Exeter; RoUisson, Tooting; Parker, of the 

 Paradise Nursery, Holloway; and Sim, Foot's Cray. 



For plants of this species I am indebted to Mr. Joseph Side- 

 botham, of Manchester; Miss Blackwall, of Llanrwst, Caernar- 

 vonshire; and Mr. Booker, gardener to W. Clark, Esq., Matlock. 



The illustration is from a plant in my own collection. 



