34 
FERNS. 
[Cystopteris. 
Fig. — Newman, 3d ed. (1854), p. 97. — Moore, 2d ed. (1853), p. 81. — 
Schkuhr. pi. 63. 
Des. — Rootstock black, fibrous, creeping extensively. Leaves 
triangular, small, on a long leaf-stalk, tripinnate in the lower part, 
bipinnate in the upper pinnae. Pinnae and pinnules spreading; the 
lower pair of pinnae much larger than the rest, with their lower 
basal pinnules much larger than the upper, and more decidedly 
pinnate. Sori numerous. Indusium sub-rotund, very obtuse. 
Hab. — B readalbane Mountains; Ben Lawers, W. Wilson, Esq., 1836. Corrach- 
Uachdar, Messrs. W. Gourlie and IV. Adamson, 1841. Corrach Dh’Oufillach, 
W. Borrer, Esq., and Dr. Arnott. Near the last station, Mr. Westcombe, 1853, 
Rev. W. Little. 
Geo. — Mountains in all parts of Europe. Rocky Mountains, North America. 
Kamtschatka. 
3.— CYSTOPTERIS ALPINA. 
ALPINE BLADDER-FERN. LACINIATED BLADDER-FERN. 
(Plate 11, fig. 3.) 
Ciia. — Leaf tripinnate, ovate, lanceolate. Pinnules ovate, blunt. 
Segments linear, obtuse, toothed. 
Syn. — Cystopteris alpina, Hook, in Br. FI., Desv. — Cystopteris regia, Bernh. — 
Cyatliea incisa, Smith in E. Bot., Galp. — Cyathea alpina, Roth. — Cystea 
regia, Smith in E. FI. and FI. Br. — Polypodium regium, Linn., Hull . — 
Polypodium trifidum, With. — Polypodium alpinum, Jacq., Schk. — 
Athyrium alpinum, Spreng. — Atliyrium regium, Gray. — Aspidimn alpinum, 
Swz., Willd., Hook., in FI. Sco. 
Fig. — E. B. 163. — Jacq. Icon. vol. iii, t. 742. — Seyuier PL Veron. supp. 1, 3. 
Des. — Rootstock black, fibrous, tufted. Leaf tripinnate, ovate, 
or ovato-lanceolate, herbaceous, 2 to G inches high. Pinnae about 
ten or twelve pairs, set rather alternately, except the lower pair, 
their length not above twice their width. Larger pinnules broadly 
ovate, or wedge-shaped, repeatedly cut into broad linear segments. 
Sori small, scattered, seated nearly at the apex of the segments. 
Margin of the indusium entire. 
These marks clearly indicate this to he a distinct species, far removed from 
both the others, and in cultivation instead of approaching the fragilis or dentata, 
it becomes yet more different, as the pinnules increase in length, hut scarcely in 
width, as in the former cases. In general habit our present species is by far the 
tenderest and most numerously cleft, with a shorter and less brittle rachis than 
Cystopteris dentata or fragilis. 
The late Professor Don thought the Cystopteris regia and Cystopteris alpina to 
he essentially different, hut Sir W. .1. Hooker speaks confidently of the Layton 
plant being precisely the same as that represented byJacquin and Schkuhr, which 
arc the same as the alpina of Don ; and as out plant at the present time has the 
wedge-shaped pinnules, said by Mr. Don to he peculiar to the Cystopteris regia, 
