flabellately divided into narrow dichotomous linear segments; spurious venules
f ew; sori 4 to 8, terminal on the central lobes, the mouth much dilated and
spreading, h u t not two-lipped.
H.ab. Fernando Po, G. ATo««.—Closely allied to T. parvulum, but a larger and more
deeply divided plant, with a broad plaited wing all round the mouth of the iuvolucre.
24. T. proliferum, B lum e ; rhizome wide-creeping, densely interlaced ; St.
1-2 in. 1., slender, bearing 1 to 3 deeply divided fronds, which were not more
th an 1 in. br. either way, varying from ovate-lanceolate to roundish iu general
outline ; segm. narrow', dichotomously branched, divided down nearly to the
central rachis ; veins numerous, irregular ; sori 4 to 12, terminal, the tube quite
sunk, the mouth obscurely two-lipped.—H k . Sp. 1. p . 118. t. 39. B. T. pal-
matum, Presl.
Hab. Java, Philippine Islands, Ceylon, and western slope of the Neilgherries.—Usually
easily recognizable by its peculiar proliferous habit, but the fronds are very variable
in outline, and sometimes closely resemble the deeply-divided forms of section 3. T. diffu-
sum, Blume, and T. Teysmami, V. D. B., are closely allied Javan plants, which I have
not seen. A plant oollected by Barter at Sierra Leone is probably this species ; but it
is in a young state, and does not show the proliferous ramification. This species is cut
more deeply than the three preceding, and the segments are narrower.
25. T. flabellatum, Bory (non V. D. B.) ; st. 1 in. 1., slender ; f r . | in. br.,
flabellate-orbicular, the principal divisions reaching more th an halfway down
from the circumference to the summit of the stipe, tlie ultimate divisions short,
the segments close together, broadly linear, obtuse, not toothed or c ilia ted ;
spurious venules n o n e ; sori 2 to 4, termina l on the central segments ; invol.
turbinate, the mouth distinctly two-lipped, denticulate.—IlymeuophyHum flabellatum,
V .D .B .
Hab. Bourbon.—Our description is taken from specimens referred to the plant of
Bory, on Dr. Van den Bosch’s authority. Bory’s plant came from the Falkland Islands,
aud lie did not know the fruit. Dr. Van den Bosch considers this a Hymenophyllum, and
uses the name for a plant we have placed under T. digitatum. There is an allied
T. Thouarsicmum, Presl, from Bourbon, which we have not seen.
26. T. PowelUi, Baker ; rhizmne wnde-creeping, tomentose ; f r . quite sessile,
J in. hr., ^-1 in. 1., simple or once or twice deeply forked, dark brown in colour, a
quite sunk ; invol. obconico-tubular, the mouth wide-spreading, two-lipped,
naked, not toothed.
J, but readily Hab. Samoa, Rev. T. Poweil.—Allied to T. distinguishable by
the characters given.
27. T. digitatum, Swartz ; st. very slender, naked, J in. 1. ; f r . 1-2 in. 1.,
4-1 in. br., irregular in general outline, divided down nearly to the base or a
broadly-winged rachis into long broadly linear dichotomous ciliated segments, with
only a central costa in each ; sori 2 to 6, terminal on the segments ; invol. cupshaped,
quite sunk, the mouth broadly dilated, slightly two-lipped.—/ f t . Sp. 1.
« .1 1 9 . T. lanceum, t o / . H k . & Gr. Ic. F il. t. S3. T. flabellatum & nitidulum,
V .D .B .—¡3, T. palmatifidnm, C. Muller ; f r . ciliated more strongly and densely,
and not on the edge only, b u t also on the costa and margin of the invol.
Hab. Mauritius, Bourbon, Java, and Polynesian Islands.—This is given as a Cape
plant, on Dr. Brown’s authority, and there is a scrap from E. India from amongst Mr.
Griffith’s plants in Herb. Hooker. The Polynesian is generally more branched than the
African plant, and in the latter the cilias are sometimes scarcely visible.
28. T. cahescens, V. D. B . ; st. 1-2 in 1., filiform, naked ; f r . ahont ^ in. each
way, inversely triangula r or rhomhoidal in general outline, flahellately divided
down nearly to the rachis into slightly dichotomous denticulate broadly linear
segm., with only a central costa in each ; sori 2 to 4 terminal on the central
segments ; invol. turbina te or obconical, sunk in the frond, with a free, broad
dilated deeply and irregularly toothed naked two-lipped mouth.— V .D .B .
d. 2. p. 115.
Hab. N. S. Wales, Major Vieary.—This also would be quite as suitably ranked under
IlyrMnophyllmn in the section Leptocionium as here.
29. T. Lyalin, H k . MSS. ; St. 1-2 in .l,, slender, filiform ; / r . | - 2 in. each way,
suborbicular in general outline, flabellately divided down very nearly to the
base into dichotoinously-branclied narrowly linear ciliated and minutely denticulate
segments ; sori 3 or 4, terminal on the segments ; invol. obconical, quite
su n k in the tube, the mouth ciliated, not dilated.—Hymenophyllum, / f t . fil.
F l. N .Z . 2-16.
Hab. Trees, south-west coast of the middle island. New Zealand, Dr. Lyall.—Quite
intermediate between the typical Ilymentypliylla and Trichomanes in the shape of its
involucre, the breadth of the orifice of which nearly equals the depth of the tube.
30. T. nanim, V. D . B. ; rhizome slender, wide-creeping ; St. very short ; f r .
not more th an g in. eacli way, cuneate below, the outer margin rounded, central
portion not more th an ^ in. broad, divisions simple or once branched ; ult. segm.
1 4 - 2 lin. 1. by J lin . br. ; texture thick but not rigid, surface somewhat undulated,
margin bounded by a thickened line ; a central vein only in each segment ;
sori 1 to 2 to a frond, sub-terminal, tube turbina te , not a t all exserted, the
mouth dilated, undulated in irregular plications.— V. D. B . 2. Suppl. p . 122.
Crepidomanes, V. D. B .
Hab. Assam, Giifiih.—Closely resembling T. intramarginale in texture, but quite
different in size, &c., and in division agreeing best with this section.
Fronds more or less deeply pinnatifid, hut not truly pinnate. Sp. 31-57.
t Ma in raehis distinctly winged throughout. Sp. 31-47.
31. T. pusillum, Sw a rtz ; rhizome wide-creeping, tomentose; f r . nearly
sessile, 2-3 in. 1., i - l in. br., oblong or obovate, cuneate-attenuate below, once
deeply pinnatifid down to a broadly-winged rachis ; lobes linear or oblong,
toothed or deeply pinnatifid, texture membranaceous ; a central costa in each
pinna, w ith numerous erecto-patent secondary veins and spurious venules ; sori 1
to 4, round the apex of the frond, tube exserted, mouth with two large rounded
lobes.—H k . Sp. 1. p . 117. T. quercifolium, H k . £ Gr. Ic. Fil. t. 115. Hemiphlebium,
V. D . B . T. Robinsoni, I lk . M S S .
Hab. Tropical South America, from Mexico and the West Indies southward to Brazil
and Peru. Kranz-kop, Natal, Robinson; Moulmein, Rev, C. S. Parish.
32. T. Krausii, I lk . & Gr. ; rhizome wide-creeping, tomentose ; f r . sessile or
nearly so, 1-3 in. h, i in. br., oblong, attenuate or cuneate a t the base, once
deeply pinnatifid down to a hroadly-wiiiged racliis ; lobes linear-oblong, nearly
entire, or toothed or sinuato-pinnati'fid, tex tu re membranaceous ; a central costa
iu each pinna, with distant pinnate secondary veins passing gradually into spurious
venules; sori 1 to 6, on the apex of the frond, tube more or less exserted, mouth
with two large rounded lips.—I lk . Sp. 1. / . 120. H k . dj- Gr. Ic. Fil, t. 149.
Ilemiphlehium, V. D. B .—j3, crispatum; pinnæ deeply lohed or pinnatifid,
broadly and conspicuously crisped, their secondary veins more numerous and
divaricated than in the type, sometimes again branched.
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