Cystopteris . ] 
FERNS. 
33 
Cheddar, Somers., Mr. IV. C. Trevelyan. Nottinghamsh., Mr. T. It. Cooper 
Near Bristol, Mins Worsley. At Exwick, near Exeter, Mr. Jacob. — Wales : Cave 
at Clogwyn Cocli, Snowdon, and rocks above Cwm ldwel, near Twll Du, Mr. W. 
Wilson. Near Wrexham, Denbighsh., Mr. J. E. Bowman. — Scot. : Aberdeen- 
shire, Mr. H. C. Watson. Moray and Ross-shire, Rev. G. Gordon. Near Maens, 
Berwicksh., Rev. A. Baird. Sutherland and the Kincardineshire Coast, Dr. 
Murray. Near Killin, Mr. W. Wilson. — Ire. : Rocks and mountains of Kerry, 
Mr. Mac/cay. Lough Inn, and Lough Derryclare, Connamara, Mr. Shuttleworth 4 
Geo. — Common in Germany, Saxony, Switzerland, Holland, &e. 
/3 ( angustata ). Leaf oblong-ovate. Pinna; lanceolate, pointed. Pinnules 
linear-lanceolate, toothed ; teeth acute. 
Cyathea angustata, E. B. and E. E. — Polypodium rhseticum, Diclc., Bolt. — 
Aspidium rlueticuin, Willd. — By no means the Polypodium rhseti. of 
Linnaeus, nor the Polypodium tenue of Hoffm., which is the Aspidium 
intermedium of modern authors. 
Very distinct as a variety, not a species. It differs from the usual state of the 
plant only in a rather larger and broader leaf, with pinnules doubly toothed and 
slightly pointed. 
y ( dentata ). (PI. II, fig. 1.) Leaf oblong-lanceolate. Pinnae ovate or ovate- 
lanceolate. Pinnules ovate, obtuse, crenate. Sori distinct. 
Cystea dentata, Eny. FI. — Cyathea dentata, Eng. Bot., Dar. W. Bot., Galp. — 
Polypodium dentatum, Dicks., With., Hull. — Aspidium dent., Sics., Willd., 
Hook., FI. Scot., D. C. — Athyrium dentatum, Gray. 
Fig. — E. B. 1588. — Pluk. Phyt. 179, fig. 5 (cultiv. spec.) — Bolton, 27. 
This variety is known from the preceding forms by the shape of the leaves and 
pinnules ; the latter are much more obtuse, rounder, and less divided ; the leaf- 
stalk is shorter and less brittle ; and the whole plant smaller (leaves 6 — 9 
inches high. 
[5 (Dickieana). (Suppl. Plate, fig. 4.) “Leaf ovate-lanceolate; pinna; de- 
flexed, overlapping ; pinnules crowded, broad, obtrase, very slightly toothed ; sori 
marginal, distinct.” 
Cystopteris Dickieana, Sim., ‘ Card. Journ.’ 1848, Newm. — Cystopteris fragilis, 
var. Dickieana, Moore. — C. dentata, var. Dickieana, Babington .] 
Fig. — Moore,' Brit. Ferns,’ 2d ed. p. 77. — Newman, 'Brit. Ferns,' 3d ed. p. 93. 
This form, which has been found only in a cave near the sea at Aberdeen, is 
distinguished by its broad, blunt, overlapping pinnules, which are often confluent 
above. It averages from 4 to 6 inches high. Mr. Babington, who gives 
C. dentata as a species, considers this a form of that plant, and Mr. Moore in- 
clines to the same view. — E d.] 
2. — CYSTOPTERIS MONTANA. 
MOUNTAIN BLADDER-FERN. WILSON’S BLADDER-FERN. 
(Suppl. Plate, fig. 5.) 
Cha. — L eaf triangular, tripinnate. Pinnae and pinnules spreading. 
Pinnules linear-oblong, incised- toothed or pinnatifid, the segments 
notched at the ends. 
Syn. — Cystopteris montana, Link., Hooker, Hooker and Amott, Babington, 
Moore, &c. &c., Neivm., 2d ed. — Cystopteris myrrliidifolia, Nexvm., 1854. 
— Cyathea montana, Roth. — Polypodium myrrhidifolium, Vill. — Polv- 
podium montana, Allioni. — Aspidium montanuxn, Sw., Schhuhr. 
