Pise XLVI. с. 
THE MOUNTAIN BLADDER FERN 
(CYSTOPTERIS MONTANA). 
CYSTOPTERIS, Bernhardi. 
Clusters of Spore-oases votundate, growing from the back 
of the veins, medial, indusiate, 
Indusium hoo 
d or eucullate, fixed by its broad base posteriorly beneath the 
sorus, and inflected over it, at length reflected ; the free (anterior) margin 
truncate acute or acuminate, often fringed. Ve 
forked 
* disunited at their extremities, 
branched, the branches (оонай) simple 
C. монтажа: fronds triangular, tripinnate below 
the lobes obtusely subfalcate, to 
mg; pinnules ova 
inciso-dentato or pin 
EXPLANATION OF THE PLATE. 
Rhizome ereeping, about as thick as a crow's quill, producing the fronds at intervals, almost black, 
1 
with a few seattered ovate scales on the younger portions, Fibres branched, rig 
‘Stipes lateral and adherent to the rhizome, slender, longer than the fr en ea ng, dark 
brownish-purple at the base, paler upwards, sparingly furnished, especially near the base, with ovate 
lanceolate scales. Rachis narrowly margined above, and together with the secondary ruchides, which 
ned, imes tinged with purple 
are also margined, sometimes ting 
Vernation eireinate 
Fronds four to twelve inches high including the stipes, the leafy portion being about three or four 
inches long, and the same in breadth ; herbaceous, deep-green, smooth ; triangular, tripinnate, Pinne 
