CYSTOPTERIS 139 
Scotland about 1903 on Corrie Clanmor by Mr. William Young, of 
Kircaldy; previously, its British origin was doubtful, as it is 
properly a native of Madeira, but this find removes all doubt 
whatever. Under glass it is quite evergreen. 
CYSTOPTERIS MONTANA (THE MouNTAIN BLADDER FERN) 
(Plate XII) 
This species (Fig. 141) is very distinct both in form of frond 
and mode of growth from the other species described, resembling 
the Oak Fern somewhat in the 
tripartate form of its triangular 
fronds, and in the possession of 
a similar string-like travelling 
rootstock instead of a compact 
creeping one. It is by far the 
best adapted for cultivation, 
thriving in wide pots or shallow 
pans if treated similarly to the 
deciduous Polypodies with open, à 
leafy sandy soil, plus some broken porous rock and good drainage. 
Dark green and perfectly deciduous, dying down early in Septem- 
ber and rising at end of March. It has, we believe, only been 
found in Scotland, but there it has been discovered in several 
places. Мо varieties. 
Fig. 141. C. montana (pinna). 
CYSTOPTERIS REGIA (ALPINA) (THE ALPINE 
BLADDER FERN) 
(Plate XIII) 
A colony of this Fern (Fig. 142) was found early last century on 
a wall at Low Leyton in Essex, but we very much doubt if it still 
exists as а wild plant in this country, and 
may be regarded rather as a foreign Fern 
than as a real native. The culture, if it 
were required, would be the same as for the 
Fig. 142. С. regia other members of the family. The fronds 
me) are nearly thrice divided, but from the 
descriptions available it does, or rather did not, differ very 
markedly from С. fragilis. 
GYMNOGRAMMA LEPTOPHYLLA (THE SLENDER-LEAVED 
GYMNOGRAM) 
(Plate III) 
This little Fern has only been found in Jersey, as it is a native of 
warmer climes than ours, and is rather an exotic than a British Fern 

