TFCR BLADDER FERNS. 
they are much more deeply cleft or serrated than 
is the case with the leaflets in Fragilis ; so deeply 
cleft, indeed, sometimes, that the leaflets are 
divided into lobes or divisions. 
The Alpine Bladder Fern is an exquisitely 
beautiful little plant. It will grow under cultiva- 
tion as readily as Cy sf ojpt eris fragilis, and may be 
planted either in the open air, on the Fern rockery 
in a cool shady spot, in pots in the house, or under 
the protection of a covering of glass. For soil the 
lightest composition must be made. Peat, silver- 
sand, light friable loam, and leaf-mould, in equal 
proportions. If planted in a pot there should be 
in the bottom of the pot a thick stratum of broken 
flower-pot or soft broken bricks, together with 
some pieces of charcoal, — the charcoal being intro- 
duced to keep from the roots of the plant the 
stagnation which might arise from the filtration 
of the water through the drainage of broken 
flower-pot or bricks. Like Gystojoteris fragilis, 
our little Cystopteris regia has a tufted root-stock, 
from which spring clusters of beautiful, delicate, 
herbaceous, charmingly green fronds. 
L 2 
323 
