70 16. HYMENOPHYLLUM.
dentate entire or forked linear segm.; sori few in number, not
pinna and usually confined to the segments of the upper side, sessile oi sliglitly
stalked, a line each way ; mlves divided more th a n Î “1 i I i /
roiiiidish or oblong, spinuloso-dentate or entire.—f t / . Sp. I - ,/ - 100-
r 969 H spinuloILm: f t . B . K . Hh. Sp. 1. / . 100. H. pedicellatum, Kunze.
i t b t p l r a Æ P « H. cristatiim, H h . é Gr. Ic. F il, 148. H . Peruviaiium,
f t / . 4- Gr. t. 208.
Hab Common in Tropical America, from Cuba and Mexico southward to Brazil
ascending in the Andes to 9,000 f t.-T h e six plants quoted as synonyms
as distinct by Van den Bosch, ft. torquescem and aculeatum, V. D. B., must probably
be placed here also ; but I have not seen specimens.
65. H. Magellanicum, W illd. ; st. erect, wiry, rigid, 2-4 in. 1., naked or margined
witli an undulato-crispate wing on each side ohlong-triangular 3-6
in h r tripinnatifid ; rachis winged throughout ; lower pmnæ broadly trianoula i,
with pinnatifid p in n l, furnished with several linear spmuloso-dentate segm. on
each L e ; sori 6 to 10,-small, terminal on the segments of ^
in vo l ohlong, with 2 short toothed valves.— R . atteniiatum, I I I . 6 / . 1. / . 99.
t. 30. B. L Magellanicum, V. D. B . H. Bihraianum, Sturm, m Flora 1853,
p . 361.
Hab. Chili, Chiloe,'and Organ Mountains.—Eaohis and stipe with an undulato-cnspate
wing, but the frond plane,
60. H. Bridgesii, H k . ; st. 2-6 in. h, wiry, naked or tomentose ; f r . broadly
o v a te -trian g n la l tripinnate, 4-6 in. 1., 2-3 in. br. below; mUm ¥ 7 1 7
slightly winged near the apex ; pin rm oblong-triangular, with t ie / M / of the
lo ^ e r ones pinnate quite to the rachis ; ult s e g f i f i i y narrowly Imeai u g id H2
lin. I., erecto-patent ; sori minute, often 6 to 8 to a pmna, placed 1 ®i 2 a t the
base of the pinnules ; invol divided about Uvo-thirds of t t e way down, oblong,
entire or very slightly toothed.—f t / . Sp. F t l 1. p . 97. t. ào. C.
Hab. Chili and Chiloe.—The only species of this section that is fully tripinnate.
.*•» Frond Sp. 67-71.
67. H. toHuosum, H k . & Gr. ; st. 2-3 in. 1., erect, wiry, furnished with a nan-ow
crisped sinuated wing on both sides ; f r . broadly ovate-triangnlar, tripm iia ttt j
3-6 in. 1., 2-3 in. br, below ; main raehis winged throughout ; lowfit pmnæ
rhoiiihoidal-triangular ; the segm. more or less crisped _; the ult. dtviswns 2-3 kn-G
linear, irregularly toothed and undulated at the margin ; sort sometimes 10 to 20
to a èinna, terminal on the ultimate segments, sessile ; broadly ovate,
divided about halfway down ; valves spinulose on t t e outer edge.—f t / , bp. 1.
p . 99. f t / , é Gr. Ic. F i l 1 129.
Hab. Chili, Patagonia, and neighbouring islands.—i . seselifoUum and L. dentatum,
placed by Van den Bosch near f t. tortuosum, 1 have not seen.
68. H. dichotomum, C a v .; St. 2-3 in .l., naked or s lig h tly margined with an
undulato-crispate wing on both sides ; f r . ovate-triangular, hi- or tn p imiatificl
4-6 in. h, 2-3 in. hr. ; main rachis winged like the stipe throughout ; hwer pmnæ
three times as long as broad ; the segm. crisped, broadly linear, undulato-dentate
a t the margin ; sori numerous, placed in t t e axils of t t e segments ; m vo l small
ovate ; valves spinose on the hack, divided about halfway down, nearly entire at
the apex.—f t / . S p. F i l \ . p . 98. t. 36. A.
Hab. S. Chill aud Juan Fernandez.—A closely allied plant grows in Peru (iec7«er,
2563) with robust fronds 10 in. 1., a tomentose rachis, and the lower pmnæ with deeply
pinnatifid pinnules more than | in. 1.
seen the fruit.
Doubtless it is a distinct species ; but I have not
69. H. denticulatwn, Sw. ; st. 1-2 in. 1., erect, naked ; f r . ovate-triangular, tri-
pinnatifid, 2-3 in. h , 1 in. or more br. at the base ; rachis margined throughout,
with a slightly undulated wing ; p innæ slightly crisped, the lower ones rhom-
boidal, twice as broad as long, deeply cleft, with flabellate or pinnatifid linear
segm. ; sori usually single, placed a t the axils on the upper side of the pinnæ,
sometimes recurved ; invol. ovate, divided ahont two-thirds of the w'ay down,
spinose on the back, with serrulated valves.—Hh. S p . \ . p . l ^ l . V .D .B .H ym . ■
Jav. t. 29.
Hab. Moulmein, at 7,000 ft., and Java.—A larger and less crisped and more compound
plant than H. Neesii. I t is beautifully figured, as are tbe other Javanese forms, by Van
den Bosch.
70. H. Neesii, H k . ; st. 1-2 in. 1., naked or slightly winged, with a críspate
margin on both sides ; f r . ovate, about 2 in. 1., J-1 in. br., tripinnatifid ; rachis
winged throughout, the wing and pinnæ much crisped ; pinnæ with distant
narrow simple or 1-3 times deeply-forked deeply-toothed segm. ; sori small, usually
single, snpra-axillary on the upper pinnæ ; invol. subcylindrical below,
divided more th an halfway down, with 2 acute spinuloso-dentate valves.—Hh.
Bp. \ . p . 99.
Hab. Malayan Peninsula, Java, Borneo, Fiji, and Philippines.—I t is quite an open
question whether this should be considered a Trichomanes or IIymenophyllum. The
Philippine plant is Leptocionium aculeatum of Van den Bosch Valves of the involucre
spinose on the back. L. acanthoides and Braunii of Van den Bosch very closely approach
this species.
71. H. saUnoefolüm, Baker ; st. 1-2 in. 1., naked or slightly winged \ f r . broadly
ovate, triangula r, deeply tripinnatifid, 1-2 in. L, more than 1 in. br. below ; raehis
margineil throughout with a wing w hich is th ick ly beset with aristate teeth ; pinnæ
crisped, the lower ones fiabellato-jiinnatifid nearly down to the midrib ; the ult.
segm. very narrow, 2-3 lin. 1., and deeply cut up nearly to the midrib by numerous
strong aristate teeth ; sori solitary, supra-axillavy, spinose on the back, divided
about halfway down with ovate spinoso-serrated valves,
Hab. Salak, Java, Zollinger.—Allied to II. Neesii and aculeatum j but here the leafy
part is so narrow, and so much cut up by the numerous strongly aristate teeth, that the
ordinary appearance of a IIymenophyllum is quite lost, and a frond looks more like a
miniature branch of Juniperus Sabina.
G e n . 17. T r i c h o m a n e s , Smith.
/S'oH marginal, always terminating a vein, more or less sunk i n / h e frond.
Invol. monophyllons, tubular, closely corresponding with the frond in texture,
the mouth truncated or winged, or slightly two-lipped. Recept. filiform elongated,
often considerably exserted beyond the mouth of the involucre, caiisu-
liferous principally a t the base. Caps, sessile, depressed, surrounded by an entire,
broad, nearly transverse ring, bursting vertically.— The fe rn s o f this genus agree
with those o f the last inhabit o f growth and delicacy o f texture, the character furnished
by the shape o f the involucre dividing a very natural tribe into two nearly equal
halves. The geographical range o f the species is very similar, as is the range o f
variation in size and circumscription o f fro n d . T ar. I I . f. 17.
§ Y Sterile and fertile f r . different, the latter consisting o f a narrow distichous
spike. Sp. 1—J-.