CVSTOPTERIS AND ADIANTUM. 
25 
16. Wyense, Lowe. A very alfiina-\ooV\x\g form, found on the 
rocks along the Wye by Major Cowburn ; dwarf, pinnae and pinnules 
crowded ; more nearly resembles C. alpina than any other variety. 
THE ALPINE BLADDER FERN. 
CVSTOPTERIS ALPINA. — Desvaux. 
(Polypodium regium. — Linnceus .) 
A RARE British species, found at the end of the last century growing 
on a wall at Leyton in Essex. This is the only well-authenticated 
locality in this country ; and the plant has now ceased to exist 
there. Dwarf for a Cystopteris, and more finely divided than 
C. fragilis. It is a native of the Alps, and is also found in Spain, 
Italy, France, Belgium, Switzerland, Greece, Hungary, Sweden, and 
Asia Minor. 
There are no varieties to be recorded, and the species is thought 
to have been introduced. 
THE MOUNTAIN BLADDER FERN. 
CVSTOPTERIS MONTANA.— Link. 
A VERY distinct, fragile, tri- 
angular fern, with tripinnate 
fronds, and very long, slender 
stipes. 1 1 has a lengthy creep- 
ing rhizoma, and flourishes 
well under cultivation, if suf- 
ficient room is given for the 
growth of the rhizoma. Sori 
copious, medial, and indu- 
siate. 
First found in 1836 on Ben 
Lawers, in Perthshire, by Mr. 
\W. Wilson. 
F ig. 6. — Lowest pinna of Cystopteris raontana 
(showing fructification). 
In 1871, Mr. P. Neill Fraser and myself visited this spot, and 
found that it was still abundant in that habitat. Mr. J. Backhouse 
has also found it in Canlochen, at the head of Glen Isla (Clova 
Mountains). It grows on moist ledges of rock, on mountains, and 
is one of our rare British species. 
Abroad, it is a native of Norway, Sweden, Denmark, Lapland, 
France, Spain, Italy, Germany, Switzerland, Hungary, Kamtschatka, 
and in the Rocky Mountains. 
There are no varieties. 
Tribe 6. PTERIDE/E. 
MAIDEN HAIR FERN. 
Adiantum Capillus-Veneris. — Linnceus. 
\N unmistakable species, and the only one of a large exotic 
(enus that is found in Great Britain. 
