insertum, medio venæ imposituin. Feius furcatæ, simplices.— Ehizoma coespiiosum v. repens; frondibus
fiaccidis, membranaceis, bi-tripinnatifidis.
A small genus of Ferns, natives chiefly of temperate and subarctic regions, of remarkably flaccid texture.
C. fragilis is found in very many parts of the globe, and is a very variable plant.— 3-6 inches high, lanceolate
or oblong-lanceolate, pinnate or bipinuate. Rhizome shortly creeping, tufted. Stipes short, slender, brittle ; rachis
winged above. Pinnæ irregulai-ly iiiciso-lobate ; upper decurreiit. Sori scattered over the back of the pinnules,
small, sometimes confluent. Involucre ivhite, membranous, attached below the sorus by a broad, convex, arching
base, ovate, acuminate, at length reflexed. (Name from khotos, a box, and snepov, a icing.)
1. C y sto p te r is fr a g ilis (Bernbardi, Neu. Journ. Bot. ii. 27).
Var. a. dentaiaj frondibus bipiuuatis, pinnis ovalis lanceolatisve, pinnulis obtusis rarius pinnatifidis.
—Hook. Gen. et Sp. Fil. i. 198. C. dentata. Hook. B rit. Fl. ed. 5. p. 441. [Gunn, 2039.)
Var. 0 . Tasmanica; frondibus pinnatis, stipite brevi, pinnis late ovatis iuciso-iobatis inferioribus
pinnatifidis, sorts paucis minutis.—C. Tasmanica, Hook. Gen. et Sp. Fil. i. 199. [Gnnn, 32.) (T a b .
CLXVI.)
H a b . Var. a. Mount Olympus aud Lake St. Clair, on moist rocks, Gunn. Var. 0 . Tasmania, Gunn
(no habitat).
D is t r ib . Var. a. Europe, Arctic regions. North India, Abyssinia, North America, Soutb Africa.
Of the two varieties one accords precisely with the European dentata ; the other differs in its less-divided
frond, broader pinnules, aud very small sori.—P la t e CLXVI. Fig. 1, portion of frond and sorus ; 2, involucre :—
both magnified.
Gen. V II. LINDSÆA, Dry.
Sori lineares, marginales v. intra-marginales, contimii v. interrupti, Involucrum exterius liberum, e
membranis 2 parallelis, superiore textura frondis, inferiore ex apicibus venarum (unæ v. plurim.) oriente.
Fena simplices v. anastomosantes.—Frondes [speeiebus Tasmanicis) parvuloe, coriácea, pinnata.
A large genus of chiefly tropical Feras, the Tasmanian species of which are small, coriaceous, aud glabrous,
and simply pinuate or bipinnate, with erect, stipitate, tufted fronds, rising from a a-eepiug rhizome.—Sori linear,
running along the edge of tbe pinnules coutinuously or interruptedly, covered by an involucre formed of two parallel
lamellæ or plates opening outwai'ds; of these the upper is coriaceous, aiid formed of the frond, the lower membranous,
and rising from the ends of one or more veins. (Named in honour of Mr. John Lindsay, author of ‘ Observations
on the Germination of Ferus.’)
1. Lin d sæa lin e a r is (Sw. Fil. t. 3. f. 3 ); frondibus e rhizomate crasso subdistantibus linearibus
pinnatis, pinnis sessilibus late cuneato-flabelliformibus marginibus demum revolutis integris crenatisve, sorts
contiuuis, stipite racbique nitido.—Br. Prodr. 156 ; Kunze in Schk. Suppl. p . 30. /. 16 ; Hook. Sp. Fil. i.
p . 2 0 6 ; Fl. N. Zeal. ii. 19. [Gunn, 20, 1535.)
H a b . Abundant in heathy places.—( y .y .) (Cultivated in England.)
D is t r ib . Extratropical Australia, New Zealand.
A verj' common Fern, easily recognized by its stout, creeping, scaly rhizome ; erect, linear, simple, pinnate
fronds, 2-18 inches high; and broadly euneate pinnules, which are spread out hke a fan. and have entire or crenate
anterior margins ; the latter become revolute when dry.—Pinnæ 4 inch broad, distant ; sori nearly continuous along
their outer edge. Stipes aud rachis stout, purplish-brown, shining.
2. Lin d sæa trichomanoides (Dryand. in Linn. Soc. Trans, iii. p. 43. t. 1 1 ); rhizomate repente
paleaceo, frondibus subcæspitosis late lanceolatis pinnatis bipinnatisve, pinnis primariis basi cuneatis stipilatisve
oblongo-lanceolatis lineari-lanceolatisve pinnatilidis pinnatisve lobatis rarins integris, pimmlis obo.
vato.cnneatis breviter stipitatis ilccurrcntibusve, margine anteriore rotondalo simplici v. lobato, soris con-
imma.— UooL Sp. Ml. i. 218. L. viridis. Cot. in T am. Phil. Journ. ii. 174.
Var. e . Lesson, : fronde pinnata v. basi bipimiata, pinnis oblongo-lanceolatis obtnsis integris lobatis
piimatiiidisve.— L. Lessimi, Bory, in Duperrey May.p. 278. t. 3 7 . / . 2 ; Hook. Sp. Mil. i. p . 2 1 7 : Fl. N
Zeal. 11. 19. (Ounn, 2057.)
Han. Dense forests near Macquarrie Harbour, Milligan, Gunn.— (v. o.)
D is t r ib . New Zealand.
An extremely variable little ¥em.~-Rhizome creeping, scaly, and having pilose roots. Fronds pinnate or
bi- rarely tri-piunate, numerous, ovate or linear-oblong, rather tufted, erect, 2-18 inches high. Stipes scaly at the
base, and rachis slender, stiff, trigonous, polished. Pinna rather distant ; in var. Zessoni simple, oblong-lanceolate,
with a euneate base, blunt, lobed. bearing sori on the lobes, more often pinnatifid, with euneate lobes, very frequently
bi- and even tri-piunate. Pinnules always broadly euneate, rounded in front, with a deep, continuous, intra-
margmal sorus. The pinnules vary from 4 - f inch long; the larger are lobed, and bear a sorus on each lobe.
Gen. V I II. ADIANTUM, L.
Son marginales, punctiformes v. elongati. Involucrum soris conforme, e margine frondis reflexo,
disco venoso capsulifero, limbo membranaceo libero.
Beautiful terrestrial Ferns, natives chiefly of the tropics, but of which one species is found in Europe, and
several occur in Australia, Tasmania, and New Zealand.— creeping. Stipes generaUy black, often polished,
F-onds bi-tripinnate in the Tasmauian species, with stipitate, broadly euneate pinnules. Sori marginal, short, or
linear and continuous. Involucre foi-med of the reflexed, often kidney-shaped edge of the frond, opening inwards
its surface veined, the veins continuous with those of the pinnules. (Name from aSmvrov, in allusion to the dru
texture of the fronds.)
1. A d ia n tum ^ t h io p i c u m (Linn. Sp. PI. 1560) ; fronde tenera flaccida oblongo-ovata tri-quadri-
piniiata, pinnulis membranaceis glaberrimis stipitatis orbicularis basi late cuneatis margine superiore lobato,
sons 2 - 6 sinubus pinnulfe, involucris majusculis oblongo-Iunulatis reniformibusve, stipite racbique gracili
glaberrima nitida rufa v. ebenea.— Zfoo/t. Sp. Fil. U p . 37. t. 77 A .; Fl. N. Zeal. ii. 21. A .assimila, A«/
Syn. Fil. pp. 125 et 322. /. 3. / . 4 ; Br. Prodr. 155 ; Hook. I. c. A. trigonum, Lab. Fl. Nov Holl ii
p. 99. /. 2 4 8 . / 2. [Gunn, 16, 52, 1540.)
H a b . Pasturc-land, belimd rocks and logs of wood; also in rocky places, frequent.— [v. v.)
D is t r ib . Throughout Australia, New Zealand, and many tropical countries. (Cultivated in England.)
A. assmiile was regarded as a distinct species from A. Mthiopicum, till the author of the ‘ Species Filicum ’
pointed out its identity with that plaut. It is found in all tropical countries, and throughout the south temperate
licm.sphere, but is hardly known iu the north temperate— Everywhere perfectly glabrous, flaccid, membranous,
pale-green or yeUowisii. Stipites tufted, slender, 4-10 inches long. Frond oblong, often elongated tri-qnadri-
iMunate; primary branches alternate, distant. Pinnules X-X inch broad, broadly euneate, stipitate; upper marrin
rounded, deeply lobed, Sori few. Involucres very large, pale, kidney-shaped, placed iu notches of the pininiles.
Rachis slender, flexuose ; partial ones and stalks of the pinnules capillary.
Gen. IX. HYPOLEPIS, Bern/,.
Son punctiformes, marginales, distincti. Involucrum e apice venulie ortum, lobul® frondis recurva;
formatuin, coriaceum v. submeinbrauaceum.