Asplenium.| FILICES. 607 
green, oblong, narrowing at both ends, bipinnate to near the pi tifid end, the pinnae 
rather ventral on the rhachis, very sho — sphtte, alno essile e lower ones 
osite. Pinnules with a leading nerve or costule which rh o itself bode the apex. 
Sori on both sides of the costule, the Faves soles opening toward it. Two broad fib. vas. 
fascicles in the stipes. Spores smoot 
m in ees group, not only on 1 account of the difficulty in assigning the different 
forms to a prototype, but still more in pn ng a leading clue to their affiliation, in as 
much as the various characters which suggest eee" for classification cross each 
other in a puzzling manner instead wre Bia parallel. 
28. A. polyphyllum, sree Tent. Pied, p. 108, and Epimel. p 
Rhizome short, creeping, 3-4” thick. Stip. rather close, ‘ie a of 
loose texture, 8—14’ long, sete at the base with a tie short scales, 
lurid- brown; the rhachis furfuraceous with deciduous fibrils, of the same 
color in its lower portion but green near the apex, as are the rhacheoles 
of the pinnae, Frond dark-green, thin chartaceous and shining above, 
r membranous, oblong-lanceolate, narrowing below, 12—36' 6--12', 
nana with a sharp pinnate apex. Pinnae 15—28 ona side, subsessile 
ne ower pairs almost opposite), patent, linear-lanceolate, 3—8‘ long 
weve broad, pinnatifid at the finely acuminate apex ; the upper 
fag pinnule not larger than its neighbor, close to and Gveclanying the 
rhachis; the lower but little more remote, almost opposite to it. Pinnules 
numerous (12 pairs or more) obliquely trapezoid-ovate to’ lanceolate, 
gee a x 3—6, shortly epi with the base arcuately cut in the 
lower and truncate with rounded angle in the upper half, pba fe to 
ing serratures or subtruncate a pointed lobules, all obtuse and fats 
dentate at the top, the auricle with 5—9 flabellate veinlets. Costule 
flexuose, evanescent before the apex. Sori both primary and secondary 
on most lobules, 1—2“ long, many reaching the m margin; the foremost 
ones of the auricle sometimes apparently (not really) diplazoid in conse- 
quence of the close approximation of the anterior fork- branches. — Gold- 
62 
. 168, tab. V, fig. 23. — Carruth. in Fl. Vit. p. 358. — The basal pinnules 
e not, or scarcely, larger than those next to them, and often the greatest 
aia of — pine is about the middle. 
main range of Oahu! First collected by Chamisso. Occurs also 
graceful and delicate fern. The teeth - the lobules are short, 
from moderately incised small forms of % of the next speci 
8 var. — Frond rather firm. Pinnules very small and crowded, sharply 
inciso-serrate and auriculate, the angles of the lobules acute, most veins 
ata out into a tooth. 
bintegrum. — Pinnae shorter, 3—5’, and narrower. Pinnules 
sono ovate, ne with a cuneate base, saheuiee: or slightly 
nticulate. Invol. firm. 
