! i
mid slinpc ; a fcxv on the lower portion of the frond, aro divided as
in suhtripinnatiim, but as they approach the apex they become less
divided, and aro variously incised and irregularly laciniated or
jagged, some hero and there being depauperated ; thoir segments
aro again serrated, tho lower autci'ior ones boing prolonged into an
aui’iclo. I t was found by (Mr. Wollaston, at Littleliampton, iu
Sussex. Another form found hy Dr. Allchin in Sussex, is of smaller
growth, and is occasionally marked by a disruption of tho epidermis
on some of tho pinnules.
8 . latum (M.). A variety with short broad ovate pinnules, resembling
tho continental Braunii. Fronds lanceolate, bipinnate ; pinnæ
bluntish, sometimes with a cristate tendency ; pinnules broad ovate
with tho anterior base enlarged, sotoscly-serratc, or when largo
lobato-serrate. Devonshire : Darnstaplo, C. Jackson; Ilfraoomhe,
J . Dodds. Somersotshire : Nottlcoombo, C. Ehcorthy.
0. densum (M.). This variety is of suboreot hahit, and is remarkable
from the rachides and veins being densely clothed with hair-
soalos, whilo tho stipes is thickly coated with larger and broader
scales. Tho fronds aro bipinnate, oblong-lanceolate, the pinnæ rather
unequal in length. Tho pinnules are small, crowded, oblique oblong,
bluntish, with a largo distinctly separated obovate auriculiform lobe,
and tho rest of the margin lobato-serrate, with aristate teeth. I t is
an elegant form. The plant was found at Albury, Surrey, by Mr.
Morso. [Plato XX C : from a young plant.]
A dcnse-pinnuled form {stipatim, Woll.) has been found by Mr.
A. Tait. This is exactly lanceolate, tapering both above and below ;
tho pinnæ short, overlapping ; the pinnules also crowded and over-
lappiiig, ovato, acuto, auricled, serrate, tho basal one only having a
very short stalk, tho rest being decurrent.
10. imbricatum (M.). This graceful and curious variety is perfectly
distinct from all others. The fronds are about two feet high,
linear-lanoeolate in outline, attenuate at the apex. In their narrow
form, as woll as in habit, they resemble the Polysticlmm, lobatum of
authors, though they have all the important charactors of P.
angulare. Tho pinnæ are short, linear-oblong, bluntish at their
apices, spreading. The pinnules are crowded and imbricated,
roundish-oblong, auricled at the anterior base, scarcely narrowed
at the apox, obscurely serrate, but terminating in a sharp mucro-
uato or setiforous tooth, the auricle also hoing tipped by a similar
tooth ; the basal anterior pinnule is larger, lohate-serrato, distinctly
.stalked, whilo tho upper ones are connected with tho rachis hy a
short somewhat winged docurrent petiole. This remarkable variety
is one of thoso which possess tho property of producing bulbils or
gemmæ on the stipes of tho larger fronds. I t was found near
Ncttleoomhe, in Somersetshire, by Mr. Flworthy, gardener to Sir
W. 0. Trevelyan, Bart. [Plato X X I.—Folio cd. t. X I I F.]
11. rotundatum (M.). A very remarkable form. The fronds arc
narrow lanooolato ; tho pinnæ short, and terminating in a blunt
confluent lobe ; the pinnules roundi.sh oblong, or often nearly round,
quite obtuse, tho margins obscurely crenate, not at all spinulose or
setaceous. The fronds aro rather small. I t has been only rooontly
found, by Mr. Elworthy, near Nettlecombe, in Somorsotshiro.
12. decttrrens (M.). This is a very distmot and handsome variety.
Tho fronds arc ovate or lanceolate, bipmnato, rather thick in
texture, sometimes multifid at tho apox. The lower pinnæ are tho
more normal in character, whilo the upper ones, which are fertile,
are more or less contracted and altered in form. The pinnules
aro distant, those of tho lower pinnæ oblong acuto, with a largo
anterior auriclo, wedge-shaped at the base, and nearly all of them
docurrent with the rachis ; they are deeply and rather distantly
lobato-serrate with spiny serratures. The pinnules of tho upper
pinnæ are more decidedly docurrent, smaller, moro distinct, generally
with tho auricle developed, but tbe remaining part of the pinnule
much reduced in size. I t is a native of Somcrsetsliiro, and was
found at Nettleoomhe hy Mr. Elworthy.
13. alatum (M.). This is a most remarkable variety. Its peculiarity
consists in the pinnules being all connected by a very obvious
wing which borders the little footstalks, as well as the secondary
rachides, on which they aro thus docurrent. The fronds grow
a couple of foot high, and aro broadly lanceolate, bipinnate. The
pinnules are short, hut acute, with the anterior basal lobe or auricle
much developed ; and tho margin is divided into shallow rounded
lobes, which aro indistinctly serrate, hut tipped hy a bristle ; the
under surface is also densely covered with hair-like scales. I t was
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