WOOD SI A. 



395 



Mr. W. Wilson found it on Ben Lawers, Maeldun-Crosk, and Craig Challiach, 

 • in Perthshire ; and Mr. J. T. Syme, between Glen Lochy and Glen Dochart." 

 The fronds (Fig. 107), narrowly spear-shaped, pinnate, and 2in. to 6in. long, 



are abundantly produced from a clustered rootstock, hidden by a mass of 



stalk-bases, which persist long after the fronds have fallen off. The stalks are 



articulated, and, like the midrib of the leafy portion, slightly hairy beneath. 



The somewhat triangular leaflets are deeply cleft into 



roundish or egg-shaped lobes of a pale green colour. 



— Hooker, Species Filicum, i., p. 64 ; British Ferns, 



t. 7. Nicholson, Dictionary of Gardening, iv., p. 216. 



Lowe, Our Native Ferns, ii., t. 69. Eaton, Ferns of 



North America, t. 60. Moore, Nature-printed British 

 - Ferns, t. 47b. Correvon, Les Fougeres rustiques, p. 66. 



W. ilvensis — il-ven'-sis (from Elba), R. Brown. 



Like the foregoing species, this has a very wide 

 range of habitat, which in fact is very similar to that 

 of W. hyperborea, and, like that species also, this is 

 one of the rarest of British Ferns. We have it on 

 the authority of Lowe that the Rev. W. Little found 

 it in Scotland, near Loch Skene, in Dumfries -shire ; f # m - Woodsia hyperborea 



(4 nat. size). 



Mr. P. Gray, to the north of Moffat ; Mr. W. Stevens, 



abundantly on the hills dividing Dumfries and Peebles-shire ; and that by 

 various other persons it has been collected near Crieff, on Ben Chonzie, 

 Perthshire, and on Ben Lawers by Mr. J. Backhouse, who also saw it on 

 the Clova Mountains, at Glen Fiadh, &c. Eaton, in " Ferns of North 

 America" (vol. ii., p. 112), states that "it is found on high, exposed rocks 

 and in their crevices, in the mountainous regions of the Northern United 

 States, and throughout British America, as far as the Rocky Mountains 

 and Norway House, on the Saskatchewan River. In New England it is 

 sometimes found at low elevations near the sea, as on Mount Desert Island, 

 Maine. It is particularly fine and abundant on the tops of the mountains 

 above West Point, on the Hudson River, and along the Saguenay River, 

 in Canada." It is also found in the Caucacus, in Siberia, and all through 

 Northern Europe. 



