630 FILICES, (Pteris. 
Sp. Fil. as regards the Hawaiian Islds. — Doryopteris pedata, Brack. — 
P. Beecheyana, Hook. 
nm rocks and along watercourses; all islands. — Not known from elsewhere. In shape 
altogether like the Brazilian Pellaea geraniaefolia, Fée, though quite disti or — From 
Knudsen s € yhi 
inches each way, the Paden ca: segments 1—2 areca Pe and resemble small Poe of 
P. irreguiaris. — Nat. names: «Iwaiwa» and «Kumuniu 
5. P. decora, Hook. Sp. Fil. II, 210. ~— Caudex and scales as before. 
Stip. teceae dea. 4—9’ long, slender, dark-brown to purple, bore 
naked. Frond chartaceous, glabrous, ovato-corda 2—6' X 3—5', 
tripinnatifid, with 2—4 pairs of cut pinnae or sein tite: besides — 
pinnatifid apex, the rhachis narrowly margined only in the upper 
internodes. Pinnae or segments opposite, sessile, all, or ae the 
lower ones, cut down to the base into 3 principal divisions of n 
equal length, the middle one, and in the lower pinnae also the ‘nteral 
ones, or at least the ‘festae. again deeply pinnatisect; the segments 
distant, separated by angular intervals, linear, the lowest 1—2‘ long and 
less than 1” broad, decurrent in a winged rhacheole of about the same 
width. Veins (nerv. Doodyae) indistinct, A gauctaipig in two series of 
bigtabd Sori continuous along the entire margins and winged rhachis, 
often filling the whole under surface. eee: entrants nnulus with 
15—16 joints. Spores and fib. vas. fasc. as in ne. 4. — Synops. Fil. 
p. 167. — Doryopteris decora, Brack. 1. ec. p. 103, tab. = — In the lowest 
ornithopoid pinnae the upper of the three divisions is quite as long as the 
middle and lower, but in the others it is shorter. 
on lava fields of Kona and Kau; Molokai! heights of Kamalo; 
Lanai! Kauai! Halemanu (Kn.). 
Histiopteris. — Frond elongate, the opposite pinnae all even-sided 
and narrowing toward the base. Spores ovoid, with one dorsal line. 
Veins anastomosing. Invol. single, 
6. P. incisa, Thunb. — Hook. Sp. Fil. II, 230. — Rhizome subter- 
raneous, long creeping. Stip. distant, pale brown. Frond subcoriaceous, 
pale, glabrous, glaucous underneath, oblong, several ft. in length, tri- 
innate below. Pinnae opposite, horizontal, broad lanceolate, all sessile, 
even-sided and narrower at the base. Pinnules opposite, perpendicular, 
8s 
divided than the next one, but neither auriculaeform nor more remote 
in our specimens. Ultimate segments or pinnules separated by acute or 
narrow angular sinuses, lanceolate from a broad sessile base, the largest 
10” >. 2—3” and sinuously incised about the middle into 3 or 4 round 
lobules. Veins (nervy. See ia obscure, anastomosing in one series of 
arches. Sori on ‘the sides ony. interrupted and unequal, the 
iiaicat 2° in prenine in our specimens. ah firm, scarious. Annulus 
