THE OBLONG WOODSIA. 281 
on the vein, beneath the sorus, having its margin fringed with 
numerous hair-like segments, which are incurved over the spore- 
cases. "This structure gradually merges through some exotic species 
into-an undivided bladdery cup, containing the spore-cases. The 
genus. Woodsia, in this comprehensive sense, may therefore be taken 
to indicate the passage from the polypodiaceous to the cyatheaceous 
structure. 
This is one of the rarest of our native Ferns, occurring in the 
crevices of moist rocks, in limited quantity, and in few and distant 
stations, among the mountains of Scotland and Wales, and in the 
north of England; ranging in elevation probably from 1200 to 2000 
feet, or thereabout. In Scotland it has been found in the Clova 
Mountains in Forfarshire, and it has been also reported from the 
vicinity of Stirling, and from Ben Lawers. Mr. Gray has favoured 
us with specimens from his herbarium, which appear to have been 
gathered at Forres, in Morayshire. It occurs rather plentifully in 
deep ravines among the hills dividing the counties of Dumfries, 
Peebles, and Selkirk ;. and Mr. Johnstone has found it in a glen of 
brittle clay-slate formation, occupying a space of about two hundred 
yards, commencing at a foot from the ground, and ascending the 
almost perpendicular rocks to the height of thirty feet. The plants 
were found only on the side of the glen having a western exposure. 
Mr. I. Hudhart, Mr. Clowes, and others have found it among the 
mountains of Westmoreland in three distinet places, and also on 
one of the Cumbrian mountains. Teesdale, in Durham, is another 
old locality in which it has probably been nearly eradicated. In 
Wales it is met with, rarely, in the Snowdon district. 
N. Wales.—Carnarvonshire : Clogwyn-y-Garnedd; Llyn-y-cwm, 
on Glyder-Vawr, W. Wilson; Pass of Llanberris, left hand side look- 
ing towards Capel Curig, L. Clark. 
Humber.=>[ Yorkshire. | 
Tyne=Durham : Falcon Clints, Winch; Cauldron Snout, 
Teesdale, J. Backhouse. 
Lakes.—Westmoreland, “ on three different mountains," E Hud- 
hart, F. Clowes. Cumberland, I. Hudhart, F. Clowes. 

