Asplenium. | FILICES. 601 
sharp adpressed teeth. Veins rising at angles of 5° and deflecting to 
10 and 20° at the middle and base of the pinnae. Primary sori in two 
crowded rows, subparallel and close to the costa, confluent with age, 
—8 long, imbricate with their distal ends and scarcely reaching the 
middle of the lamina; only few secondary sori on the upper base, at 
angles of 20—30°. Invol. narrow, thin, pointed at both ends. — Metten. 
te p. 152. — Hook. Sp. Fil. III, p. 156, tab. 194. — Brack., Mann. 
ll. 
"s var. filiforme. — Pinnae narrow and long, 6‘ and upwards, drawn 
out into a long slender tail. — A. filiforme , Kaulf. 
7% var. lacimiatum. — arge form. All or most pinnae narrowly slit 
n one or several places to near the rhachis, thus giving to. the frond a 
torn, tagged appearance. 
& va — Frond linear- lanceolate, easmeaeih re 
1? 
length by 4” in breadth, the upper base parallel to the aa es 
rounded. — Kauai! Knudsen. — Soriferous fronds of quite Se plants 
with rhizomes 3—4” long measure only 2‘ and bear 8—10 pinnae on a 
side, which are 3—6“ long, cuneate-obovate to obliquely ane thelr veins 
flabellate without leading nerve or costule, or one 0 only re g 1/s—1/e 
of the length; the sori few and flabellate, but most in i: Sa line. 
nm all islands in forests of medium elevation. — dese species was pone ollected on 
the Hawaiian group by Chamisso, but has si nd on Lord Howe’s Isld., Luzon, 
try Hills. In it ts typical form prograts satiny pede with linear 
auriculate at the base and are excised below to 
nearly 1/3 their in often a straight line, the sori close to the costa, the species 
is very distinct indeed, pe = _passes by gradual song nissan into A. falcatum, Lam., and 
A. caudatum thachis, as figured . 2 of the plate in the Sp. Fil., 
I have never met with 
20. A. Knudsenii, sp.. — A small fern, with the rhizome scales and 
color of oe contiguum. Stip. brown, slender, 6—7‘ long. Frond thin 
chartaceous, 5—7‘ long, with 10—20 pinnae on each side, which are o 
Sige sais or ovate-lanceolate, 1—1'/2‘ & 3/s—? jo, acute, slightly inciso- 
serrate, the upper half of the base parallel to the main rhachis and 
rounded. Veins as before. Sori very short, i 
on each side of the costa, neither ¢ 
seated on the middle portion of the entebioe branch or at one of the last 
amines spe Invol. thin, pointed at both ends. 
uai! Waimea (Kn.). 
nitidulum, sp. n. — Rhizome and scales as before. Stip. distant 
gay, dark-brown or almost black, 4—6’ long, fibrillose or naked. 
Frond thick chartaceous, olive-green, lanceolate, 5— 15’ long and 2!/2—4' 
broad at the middle and thence gradually narrowing to apex and base, 
pinnate, the lowest pinnae 6—15“ long. Pinnae 12—16 on a side, patent, 
