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TONQUIN FERNS. 2G5
broad. Veins pinnate, with 3-4jugate veinlets, anastomosing as
in Eunephrodium in the outer half of the pinnules. Sori hnear,
beginning at the base of the veinlets, the lower i in. long. Indusiuni
very narrow, glabrous. — Habit of South American A. costale Sw.,
but veins united.
1821. Aspidium aculeatwn Sw.
1818. A. laserpitiifolimi Mett.
1849. A.falcatum Sw.
38, 1795, 1820. Xephrodium Filix-mas Kich.
23, 24, 1863. .V. syrmatkum Baker.
75, 1939. iV. odoratiun Baker.
72. N. setigerum Baker.
1791, 1802, bis. N. dissectum Desv.
(138;=), 1815. Nephrodium(LASTREA)obovatum,n.sp.— Stipe
a foot long, slightly scaly ; palefe firm, lanceolate, nearly black, with
a pale brown edge. Frond oblong-deltoid, decompound, thin,
glabrous, 1^-2 ft. long. Lower piunsB the largest, produced on the
lower side ; central oblong-lanceolate, with lanceolate pinnules cut
down to the rachis. Final segments obovate or oblong, obtuse,
^-J in. broad. Veins pinnate in the final segments ; veinlets very
ascending. Sori medial on the veins. Indusium small, fugacious.
Near ^Y. catoptcron Hook.
(145-), 183G. Nephrodium (Lasteea) setulosum, n. sp.
Frond ample, deltoid, bipinnatifid, moderately lirm in texture,
green on both surfaces, setulose on the ribs beneath ; rachises dull
brown, not paleaceous. Lower pinnae oblong-lanceolate, a foot or
more long. Pinnules sessile, lanceolate, 3-4 in. long, an inch
broad, the lowest cut down to a narrow wing into linear-oblong
tertiary segments, |-^ in. broad. Veinlets 8-9-jugate in the
tertiary segments, simple or forked. Sori placed midway between
the midrib and margin, a dozen or more in the lower tertiary
segments. Indusium small, reniform, persistent.
26, 1805, 1806. N. Lcuzcanuin Hook.
51. N. penni(jenim Hook?—Pinn?B like those of pennbjcnuii, but
rootstock wide-creeping.—May be a distinct new species.
1864. N. tnincatum Presl.
(202-'=), 1947, 1948. Nephrodium (Saoenia) quinquefidum,
n. sp.— Stipes tufted, 1^ ft. long, naked upwards, bearing many
lanceolate brown palese in the lower third. Frond thin, deltoid,
quinquefid, ^-1 ft. long, nearly or quite as broad as long ; central
segment oblong, acute, 2^-3 in. broad, irregularly repand ; lower
pair of segments quite distinct from the end one, sessile, deeply
forked on the lower side at the base. Main veins parallel, arcuate,
about half an inch apart, with numerous cross veinlets like tliose
of a Cuinlujluneuron, and copious small areola). Sori copious, minute,
various in form, very dense, often confluent. Indusium minute,
fugacious.—Near .V. tcrnatinn leaker.
(212' ), 1857. Nephrodium (Sagenia) stenopteron, n. sp.
Stipe brown, reaching a length of 1^-2 ft., clothed towards the base
with copious large linear brown membranous paleio. Frond oblong-
dclloid, membranous, green and glabrous on both surfaces, li-2 ft.