Prate IV 
THE MOUNTAIN POLYPODY, or ВЕЕСН FERN 
(Рогурорим PHEGOPTERIS). 
POLYPODIUM, Linneus. 
Clusters of Spore-cases circular, without covers, growing from the back of the veins, 
terminal, or nearly so. Veins disunited at their extremities, their branches 
(eenvies) simple, forked or rarely pinnate 
P. Precorranis; fronds ovate-triangular, acuminate, pinnate below; pinnze lanceolate, 
the lower pair distinct, sessile, usually deflexed, pinnatifid; lobules linear-oblong, 
blunt; upper pinnæ confluent 
EXPLANATION OF THE PLATE. 
Rhizome creeping extensively, branched, tough, slender, about the thickness of a straw, dark-brown, 
pilose and sli 
Шу scaly while you 
is the older portions denuded both of scales and hairs Seales 
lanceolate, golden-bi 
wn, intermixed with other cobwebby hair-like ones, Fire numerous, much 
branched, dark-brown, invested with golden-brown eobwebby deciduous pubescence 
Stipes as long 
s, or more frequently lo 
r, and often much longer than the frond, erect, brittle, 
pale-green, furnished near the base with a few lance 
acuminate pale-brown scales which are soon 
deciduous, and on the upper part with a few scattered subulate scales; the whole length clothed with 
d hairs ; distant and lateral on the rhizome 
Vernation circinate ; the pinna: rolled up separately towards the rachis, which is then rolled from 
the point downward 
Fronds from four to е 
сеп or twenty inches in length, including the stipes, adherent to the 
rhizome, membranaceous, of a dull pale-green, hairy, ovate-triangular. 
much acuminate, pinnate below 
P 
he apex of the frond pinnatiñid. P 
w deeply pinnatifid, linear-acuminate, nearly 
