194 
Choice Ferns for Amateurs. 
CY ST OPTKRIS- continued. 
including their short stalks; these latter are thicker than 
those of any of its congeners, and have their base densely 
coated with brown scales. 
C. montana. 
The Mountain Bladder Fern is a very handsome plant, 
quite distinct in habit from all other species and varieties 
belonging to the same genus ; for its lovely and very elegant 
Fig. 85. Frond of the Mountain Bladder Fern, Cystopteris 
montana, a lovely Fern for a moist sunless part of the 
Hardy Fernery. 
fronds, which are delicately divided (Fig. 85), strikingly tri- 
angular in outline, about Gin. each way, instead of emanating 
from either a compact crown or a short rhizome as in other 
species, are produced on very slender, underground rhizomes. 
They are borne on slender, erect stalks, from Gin. to 9in. 
long, perfectly smooth, except near their base, where there 
are a few light-coloured scales, and are quadripinnatifid and 
of a light green colour. To grow this Fern successfully a 
sheltered, moist, and sunless part of the hardy Fernery 
must be chosen. Devote to it a level spot 1ft. square, 
remove the soil about lOin. deep, half-fill the hole thus 
formed with broken bricks, or other porous material, and 
