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272 44. N E P H R O D I U M , § L A S T R E À .
Sagenioe, not in general habit, but by its polished, dark-coloured stem, and by the sori
being usually terminal on branch veins. A. zeylanicum, Fée, is probably this species.
72. N. (Last.) si/rmaticim. Baker ; st. tufted, 1-2 ft. 1., naked, stramineous ;
f r . 3-4 ft. L, 12-18 in. br. ; pinnoe C-0 in. 1., U - l J in. kr., cut down to a broadly-
winged rachis into slightly-toothed lobes 2-3 lin. br., the lower ones stalked, the
lowest not much reduced ; texture subcoriaceous ; rachis and both surfaces naked ;
vemlets 12-15 on a side, nearly all forked ; sori nearer the edge th an the inidnb.
—Aspid. Willd. N. spectabiie, H k . Sp. 4, p . 115.
Hab N. India to Ceylon, Philippines, and Malaccas.—There is a form with medial
sori, and more distant and fewer (6-8) veinlets. This also has the sori often terminal on
the branch veinlets, and not unfrequently the groups join at the sinus. Willdenow
supposed it to be a South American plant, doubtless by mistake,
73. N. Filix-mas, R ic h .; st. tufted, 6 in. or more 1., more or less
densely clothed with lanceolate scales; f r . 2-3 ft. 1., 8-12 in. hr. ; pinnoe lan ceolate,
4-G in. 1., -|-1 J in. h r., cut down very nearly to the rachis into close,
blunt, regular subentire lobes lJ -2 lin. hr., lower ones rather shorter th an the
o th e rs; texture herbaceous; rachis more or less scalv, under surface n a k e d ;
lower veinlets subpinnate ; invol, large, convex.—H k . B rit. F. t. 15.—/3, N . affine
{ F . é A i , suh Aspid.) ’, pinnoe not so blunt and with a space between them,
narrower and the edge more or less deeply toothed.—y, N . elongatum, Hk. & Gr. ;
l)on ; sterile and fertile f r . different, the pinnl. of the former broad-leafy, the
lower ones deeply lobed, those of the latter much contracted, the two^rowsof
laro-e sori with prominent convex invol. often 1 lin. hr., occupying their whole
surface.—Arthrobotrys, Wall. I lk , Sp. 4. p . IW . Dryopteris, 6'cAoíí.
Hab. a and /3 througliout Europe and Asia, from Lapland to Japan and the Malay
Isles, ascending to the Himalayas to 15,000 ft. ; Madeira, Sandwich Isles ; America, from
Greenland along the Rocky Mountains and Andes to Peru, y, Azores, Madeira, Gimiea
Coast, Cape Colony, Mascaren Isles, Abyssinia, E, Indies, S. United States, o, Hindostán
and Malaccas.—The extremes as described diff'er widely, but we cannot draw any
clear line between them. A. ScJiimperianum, Canariense, Ludovicianum, and marginatum,
none of them seem clearly separable from y, which might be looked for iu group 7-
P in noe cut nearly <n' quite down to the rachis into tootlied or pinnatifid
lohes. Sp. 74-87-
74. N. (Last.) Preslii, B a k e r; st. Q-9 in. 1., slender, deciduously fibrillose ;
f r . 6-9 in. 1., 4-5 in. br., lanceolate-deltoid ; upper ffinnoe lanceolate, close, lovyest
pair deltoid, the upper pinnl. 2 lin. br., blunt, entire, the lovver ones pinnatifid,
with similar lobes and broad u n cu t centre ; texture subcoriaceous ; rachis
fibrillose, both surfaces naked ; sori about 6 to the lower lobes, dorsal on tlie
veins, nearer the midrib th an the edge.—L. propinqua, P resl é J . Sm. {in p a rt).
Hab. Philippines, 255.—This agrees in cutting with the small forms of
N. memhranifoHum, but tbe texture is thicker, and the sori are dorsal, not far from the
base of the obscure veinlets.
75. N. (Last,) Goldieanmn, I lk . ; st. tufted, 1 ft. 1., clothed with large dark
scales below ; f r . 2-3 ft. 1., 1 ft. or more br., ovate-deltoid ; lower ptnnæ 3-9 m.
1., 2 in. hr., cut down nearly to the rachis into linear-lanceolate subfalcate,
slightly-toothed lobes; rachis and both surfaces n a k e d ; texture herhz^eeou^
veinlets obscure, forked ; sori in rows near the midrib.—H k . Sp. 4. p . 121.
H k . & Gr. Ic. t. 102.
Hab. Canada to Kentucky.—This comes nearest N. Filix-mas, which is not found in
the Kortoern United States.,
7C. N. (Last.) marginale, Mich. ; st. tufted, G-12 in. 1., clothed principally at
the base with larqe lanceolate concolorous scales; f r . 18-24 in. 1., 6 -8 in .b r .,
ohlong-lanceolate, bipinnate ; pinnæ 3-4 in. 1., 1-1J in. br. ; pinnl. ovate-oblong,
blunt, nearlj" entire ; rachis and both sides nearly naked ; texture herbaceous ;
lower vdnlets of the pinnl. pinnate ; sori marginal.—R k . Sp. 4. p. 122.
H a b . Canada an d U n ite d S ta te s .—A b o u t midway b e tw e en th e ty p ical form of F ilix -
mas an d cristatum in g en e ra l h ab it.
77. N. (Last.) lacerum, Baker ; st. 4-8 in. 1., densely clotlied below with large
ovate-lanceolate sc a le s;/® . 12-18 in. 1., 6-10 in. br., ovate-deltoid ; p innæ 4-5
in. 1., l J-2 in. hr., lanceolate ; upper pinnl. confluent, lowest free, lanceolate,
acute, subfalcate, nearly entire, b u t the lower ones auricled on both sides of the
base ; texture subcoriaceous ; rachises ratlier scaly ; both sides naked ; sori
confined to the upper th ird of the frond, occupying nearly the whole of the contracted
p in n l.; invol. J lin. br.—Polyp. Thunb. Lastrea, Eaton.
Hab. Japan and Tsus-Sima.—Very near some of the Indian forma of Filix-mas, but
admitted as distinct by Eaton and Mettenius.
78. N. (Last.) erythrosorum, H k . ; St. tufted, 6-9 in. 1., more or less densely
clothed with long lanceolate and linear scales ; f r . 12-18 in. 1., 8-12 in. br.,
ovate-lanceolate ; p im m lanceolate, the lowest the largest, 5-6 iu. 1., I J in. hr.,
cut quite down to the rachis below into ohlong-bluntish pinnl. 2-3 in. br., the
.ttJ.tt.tt, ttttlfttttJtt+Kx t-x-x n o oTvii-xrtool fArt+E£x8 ■ fi'rrf.'ii.'t'i) ■ firm K n f l i i i r lx i i r*prxn« • Vint.li
Hab. Japan and China.—Intermediate in appearance between varium and
N. Filix-mas.
79. N. (Last.) Floridanum, H k . ; st. 6 in. or more L, with a few ovate concolorous
scales ; f r . lJ -2 ft. L, 6-8 in. br., oblong-lanceolate ; fertile pinnoe
confined to the upper half, close, lanceolate, 3-4 in. 1., 1-1J in. hr., cut down to
a narrowly-winged rachis into oblong, slightly crenated, blunt pinnl., with their
own breadth between them and two rovvs of sori reaching from the midrib
nearly to the edge ; barren pinnoe broader, the lovver ones rather reduced and
subdeltoiff, all not so deeply cut and the pinnl. close ; texture herbaceous, botli
sides naked.—H k , F il. E x . t. 99.
Hab. Louisiana and Florida.—Perhaps a form of N. cristatum, with which it agrees
in its barren pinnæ, differing in its dimorphous fertile ones.
80. N. (Last.) cristatum, Mich. ; st. tufted, 6 in. or more 1., sparingly clothed
with ovate concolorous scales ; f r . 12-18 in . k, 3-5 in. br., narowiy oblong-
lanceolate ; lower pinnoe deltoid, 2 in. L, 1 in. or more hr., the lowest pair about
equal to the next, cut down nearly, or quite, to the base below into broad,
blunt, oblong, slightly pinnatifid ; teeth uol a rista te ; herbaceous ;
stramineous rachis and both sides nearly naked ; invol. naked.—H k . Sp. 4.
p . 121.—(3, N . uliginosum {Newm. suh Lastrea) ; f r . broader ; pinnl. more acute
and more deeply cut, teeth mucronate.—B r it. F . t. 17. A. spinuloso-cristatum,
Lasch.
Hab. Scandinavia to N. Italy and Greece ; Hudson’s Bay^ territory, Canada, United
States.—Our /3 is a connecting link between cilsiatum and spinulosum, the barren fronds
resembling most the former, and the fertile ones the latter.
81. N. (Last.) Borneense, Hk. ; rhizome stout, wide-creeping, densely fibrillose
; S t . 6 in. 1., firm, erect, brown, naked ; f r . 12-18 in. 1., 4-6 in. br.,
lanceolate ; p innæ 2-3 in. 1., J to 1 in. hr., cut down to a broadly-winged rachis
into linear-oblong deeply pinnatifid lobes ; texture subcoriaceous ; rachis and veins
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