woodsia. 
123 
large and tripinnate, the pinnules long-ovate. Aberdeen- 
shire is its locale. 
Polypodium alpestre, var. lanceum, is also a large va- 
riety, more elongated than the last, and with the seg- 
ments bluntly toothed. It is found both in the Clova 
mountains and Aberdeenshire. 
Polypodium alpestre , var. laciniatum, has the narrow 
and elongated form of flexile, but, instead of the pinnae 
being distant, they are very closely placed, and the 
margin is deeply toothed. 
WOODSIA. 
Gen. Char. Boundish sori, having an indusium , or wrapper, 
fixed beneath , which tears into hair-like fragments at the edge. 
7. Woodsia Iiyperborea. Rons d-leaved Woodsia® 
(Woodsia aljpina.) 
Caudex short and thick, upright. Boots very numerous. 
Fronds lanceolate, from two to six inches in height, hairy, pin- 
nate ; the pinnae oval, and cut at the edge into rounded lobes. 
Stem chestnut-coloured and glossy. 
These ferns are named in honour of Joseph Woods, 
Esq. 
The Round-leaved Woodsia renews its fronds each 
spring, the old ones having perished in the frosts. Both 
the British species have an articulation in the stem, a 
short distance from its juncture with the caudex, and 
here the partition is made on the death of the frond. 
The form of the frond is linear, that is, long and narrow, 
its upper surface is smooth, but both hairs and scales 
are scattered underneath. 
This is a pretty and elegant little plant, but is valued 
more for its rarity than its beauty. It has been found 
