pinnatis erectis decurvisve, pinnis distantibus decurvis margine superiore præcipue parce pinnatifidis, segmentis
linearibus argute dentatis simplicibus pinnatifidisve, involucris supra-axillaribus liberis obovato-
oblongis tumidis, valvis integerrimis, rachi superne alata.— / ’/. N. Zeal. ii. 11. H. Wilsoni, Hook. Brit.
Fl. ed. i. p . 450 ; Sp. Fil. i. p . 95 j TFils. in Engl. Bot. Suppl. t. 26S6. H. Tunbridgense, 0 , Kunze, Plant.
A fr .A u s t. 7. {Gnnn, 1511.)
H a b . Common, especially on trunks of trees, in damp forests.— («. y.)
D is t iu b . New South Wales, Victoria, New Zealand, Chili, Fuegia, South Africa, Great Britain.
Tliis differs from H. Tuniridgense, 0. cupressiforme, only in the entire lips of the involucre, otherwise these
plauts appear identical. I find the amount of toothing in the valves of H. Tunbridgense, 0, to vary extremely,
sometimes amounting to a mere erosion, aud at others the lips being even laciniated aud spinulose, so that I can
hardly doubt tliese two proving eventually the same species.
§ B. Fronds quite glabrous, or with the costa and rachis only setose; margins neither toothed nor ciliated.
a. Fronds pinnatifid, rarely pinnate below; rachis, and generally the stipes, xcinged.
3. Hymenophyllum rarum (Br. Prodr. 159) ; fronde péndula tenera oblongo-ovata v. lineari-
elougata glaberrima bipinnatifida v. basi pinnata, segmentis brevibus planis latis integerrimis, involucris late
ovatis rhombeisve terminalibus fronde iramersis compressis, valvis latis brevibus integerrimis, stipite racbique
cnpiilari.—Hook. Sp. F il.i.p . ■, F l.N .Z e a l.i .\2 \ . H. semibivalve,Æbo/S. e /G ry y ./c ./" //./. 83. H.fu-
marioides, Bory, in Willd. Sp. PI. v. 526. H. imbrieatum, Col. in Tam. Phil. Joum. [Gnnn, 47,1512.)
H a b . Abundant in damp forests, often clothing trunks of Dicksonia Antarctica.— (y. y.)
D is t iu b . New Zealand, South Chili and Fuegia, South Africa, Ceylon.
A very beautiful Fern, varying extremely in size and habit wherever found. It clothes trunks of Tree-Ferns
with a glistening garment of the most delicate and beautiful green, the fronds hanging down and overlapping one
another in profusion. It may be readily recognized by its ham-like stipes and rachis, transparent membranous
fronds, and broad, short, terminal involucres.—F/oHífs 1-8 inches long, broad or naiTow, linear, bipiiinatifid.
Pinnæ shoi-t, often very irregular and unequal, distant, or close and overlapping one another. Segments short,
broad. Involucres rhomboid, wliolly sunk iu the ends of the segments, very flat, with short, broad, enth-e lips.
4. Hymenophyllum crispatum (Wall. Cat. 1 6 9 ); erectum, fronde ovata v. lineari-ovata bi-tri-
pinnatifida, segmentis linearibus planis undulatisve, involucris terminalibus liberis sessilibus ovafis turgidis
ad basin partitis, valvis integerrimis erosisve, raclii stipiteque late alatis, ala plana undulata v. crispata.—
Hook, et Gi'ev. Ic. Fil. t. 77 ; Hook. Sp. Fil. i.p . 105. H. flabellatura, Br. Prodr. 159, non Lab. H.
atrovirens, Col. in Tasm. Phil. Journ. II. flexuosum, A. Cunn. Prodr. Fl. N. Zeal. ; Hook. Sp. Fil. I. c.
Ic. PI. t. 962. [Gunn, 1513.)
H a b . Damp woods, abundant on stones and trunks of trees, etc.— (y. y.)
D is t r ib . Victoria, New Zealand, Malay Islands, Ceylon, Himalaya Mountains.
Fronds 2-8 inches higli, erect, lurid green, bi-tripinnatifid. Segments linear, ^ inch broad, flat, undulated or
crisped. Involucres often very numerous, terminal, ovate, turgid, broader than the segments of tbe frond, deeply-
divided into two valves, whose lips are quite entire or erose. Stipes and rachis with a broad, flat or crisped wing.
Rhizome quite glabrous, creeping.
b. Frond pinnate below. Rachis not winged below.
5. Hymenophyllum flabellatum (Lab. Fl. Nov. Holl. ii. p. 101. t. 250. f. 1, non Br. Prodr.) ;
glaberrimum, nitens, fronde péndula v. decurva lineari-oblonga rarius ovata, pinnis plerumque basi cuneatis
late ovatis flabellatim dilatatis pinnatifidis v. bipinnatifidis, segmentis linearibus furcatis brevibus caudato-
elongatisve, involucris segmenta lateralia terminantibus orbicularibus oblongisve ad basiii fere bivalvibus,
rachi superne alata inferne nuda, stipite glaberrimo ima basi parce lanato.—Æbo/r. Sp. Fil. i .p . 111. H.
nitens, Br. Prodr. 159; Fl. N . Zeal. ii. 151 ; Hook, et Grev. le. Fil. t. 197. [Gunn, 19, 1514.)
H ab. Damp forests, abundant, especially on Tree-Ferns.— (y. y.)
D is t r ib . Victoria, New Zealand.
A very beautiful small species, often clothing the trunks of Tree-Ferns witb its pale-green, glistening fronds.
—Rhizome rigid, wiry, Stipes 2-4 inches long, wiry, glabrous, except at the very base, wliere there is a tuft of
soft, palc-brown, ivoolly hairs. Fronds broadly ovate when erect, linear or oblong when pendulous, 2-6 inches
long, pinnate below, pinnatifid above, perfectly smooth, transparent. Pinna twice pinnatifid; segments linear,
quite enth-e aud smooth, generaUy broadly euneate at the base. Involucres smaU, terminal òn lateral segments!
orbicular or oblong, the valves entire or toothed.
O b s . I know nothing of II. australe, Willd, Sp. PI. v. 527 (said to be found in Tasmania by LabiUardiere),
except it be the H. rarum, as conjectured in the ‘ Species FiUeum,’ p. 108.
Gen. V. TRICHOMANES, Sm.
Sori marginales. Involucrum tubulosum, textura frondis, basi attenuatum, apice dilatatum v. bivalve.
Capsula receptáculo filiformi sæpius exserto sessiles, depressæ, annulo completo transversali cinctæ, longi-
tudmaliter ruptæ.—YvbxAo.% plerumque membranacea, pellucida, cellulis magnis reticulata.
A more tropical genus thau Hymetwphjlhm, to which alone it is very closely allied, and from wliich it differs
in the tubular or trampet-shapcd involucre, whicli is less obviously two-lipped, often quite circular at the mouth,
and having a generally exserted, filiform reeeptacle. (Name, an ancient one of uncertain application.)
1. Trichomanes venosum (Br. Prodr. 15 9 ); rhizomate repente filiformi, fronde parvula péndula
nitida membranacea pinnata, pinnis remotis late lineari-oblongis ligulatisve simplicibus v. basi furcatis obtusis
V. emarginatis margine nou incrassato répandis, costa flexuosa, venis furcatis, involucris ad basin pinnarum
fronde immersis liberisve tubuloso-urceolatis, ore dilatato breviter bilabiato, receptáculo plerumque capillari,
rachi apice alata inferne stipiteque capillari.—//yy/. et Grev. Ic. Fil. t. 7 8 ; Hook. Sp. Fil. i.p . 132; Fl.
N .Z e a l . i i . n . (Gm«k, 1515.)
I Iab. Abundant, clothing the trunks of Tree-Ferns.—(y. y.)
D is t r ib . New South Wales, Victoria, New Zealand.
An extremely delicate and beautiful Fern, often clothing Tree-Ferns, as Hymenophyllum fiahellatum and H.
rarum ào.— Rhizome creeping, and stipes capiUary. Fronds 2-5 inches long, linear, pinnate, membranous. Pinnæ
distant, linear-oblong or strap-shaped, euneate at the base, not margined, blunt or emarginate, waved along the
edge, simple or divided at the base, 4 -1 4 inch long, inch broad; costa flexuose, giving off branching veins.
Involucres on tlie upper edge of the pinna at its base, sunk in the frond or in a lateral segment. Receptacle included,
or capiUary and exserted. The upper pinnæ are often of irregular length, sometimes very long and caudate.
Tribe IV. P o i .y p o d ieæ . - iSyn/s near the margin o f the fro n d or dorsal, rounded or linear. Capsules not
placed on an elevated receptacle, stalked, partly girt with a vertical ring, bursting transversely on the
side where the ring is wanting.
Sub-tribe A.—Sonis covered with an involucre (indusium), or with the more or less altered margin o f the
frond.
Gen. VI. CYSTOPTEEIS, Bernh.
Sori globosi, dorsales. Ittvolucrum superficiale, membranaceum, cucullatum, basi inflata iufra sorum