WOODSIA. 
19 
SUB-ORDER II. 
POLYPODIACEZE. 
Tribe 2. DICKSONIE/E. 
THE OBLONG WOODSIA. 
WOODSIA ILVENSIS. — R. Brown. .A 
A diminutive mountain fern with fronds 
from 2 to 4 inches long. This plant grows 
in the crevices of damp rocks. The fronds 
are lanceolate-pinnate, the pinnae being 
profoundly pinnatifid. The rachis, stipes, 
and underside of the frond chaffy, and the 
sori scattered. It is a deciduous fern, and 
requires growing under a bell-glass. Ex- 
ceedingly rare, and found at altitudes o! 
from 1,200 to 3,000 ft. Mr. Joseph Side- 
botham discovered it in Carnarvonshire 
and it has been found in Westmoreland 
Cumberland, and Durham, one locality 
near the Caldron Spout, Teesdale (in ar 
inaccessible place, E. J. L.). In Scotland 
near Loch Skene (Rev. W. Little) to the 
North of Moffat (P. Gray), hills between Fig. 1.— Woodsia ilvensis. 
Dumfries and Peeblesshire (abundant, 
Mr. W. Stevens), near Crieff on Ben 
Chonzie (the late Professor Balfour), 
Ben Lawers (Mr. J. Backhouse), Clova 
Mountains (Sir W. Hooker). Professor 
Balfour, Mr. Neill Fraser and myself 
failed to find it on Ben Lawers. 
It occurs in Iceland, Lapland, Nor- 
way, Sweden, Denmark, Russia, Nova- 
Zembla, Caucasus, the Crimea, Spain, 
Italy, France, Germany, Switzerland, 
Hungary, Siberia, Kamtschatka, United 
States, Canada, the Rocky Mountains 
and Arctic America, Japan, Siberia, 
Labrador, Greenland. 
No varieties are recorded. 
Hairy, but not scaly. 
Equally rare and scarcely as large 
as Woodsia Ilvensis, and with shorter 
pinnae ; growing in similar situations. 
Our British recorded localities are 
Snowdon (Mr. L. Clark) near Crieff on , 
Ben Chonzie, Perthshire, Glen Isla For- Fig. 2 — Woodsia hyperborean 
THE ALPINE WOODSIA. 
Woodsia hyperborea. — R. Brown. 
