Polypodium.| FILICES, 557 
even trifid. Pinnules less numerous and shorter, linear or linear-clavate, 
even acerose, reduced to the vein; the broad sori projecting much be- 
ig them. 
mpy ground on the top of Mt, Eeka, Maui! high plateau of Kauai! also 
linet (Baldwin). 
3 var. abietinum. — Frond short and broad, oblong, scarcely narrowing 
below, 11/2—3’ long with the stipes and '/2—4%/4’ broad, the stipes and 
rhachis filiform, flexuose. Otherwise as in y. — P. abietinum, Eaton, in 
Mann, Enum. no. 626. — A diminutive form, with 10—12 pairs of pinnae 
and 5—7 pairs of linear pinnules to each. 
Rare, on trees, Oahu! Konahuanui; Hawaii! Kohala range; Kauai! (Kn,). 
10, P. Hillebrandii, Hook. Sp. Fil. IV, 228, tab. 279. — Rhizome as 
thick as a crow’s a creeping, sparsely paleaceous. Scales pale brown, 
long acuminate, with 1, 2 or 3 stipitate glands at the apex, and a few 
scattered over the ate Stip. at distances of 9-12”, stiff, pale brown, 
naked, 4—5’ long, margined or winge rond subcoriaceous, rather 
transparent, pale, sparsely resinous but wiabeaibes ovato-lanceolate, 8—12’ 
X 2/2—4', not ip gpa below, abruptly ending in a long drawn out 
pinnatifid apex, bi-, tripinnatifid. Pinnae 12—20 on each side, rather 
distant, decurrent along the rhachis, cut deeply, but always leaving a 
margin to the rib, into narrow oblanceolate or acutely spathulate segments 
which are 3—6“ long and 1“ or more broad below the acuminate for- 
ward pointing apex; the basal i eee always and generally more or 
most segments notched or cut into 5—2 pointed serratures, with one 
acute veinlet to each. Sori Srbkie the acute apex of the vein pro- 
iy beyond. Paraphyses paler than in no. 9. — P. tripinnatifidum, 
Mann, Enum. no. 625 (not Presl nor Gaud.). 
With the first form of P. tamari scinu , in the lower forests, but much rarer. though 
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b. — Spores ovoid-reniform, with one dorsal line. 
11. P, pellucidum, Kauilf. J. c. p. 101. — Rhizome creeping, of the 
size of a goose- quill, covered with ferruginous, ovate-lanceolate, long 
acuminate, thin margined, dentate scales. Stip. distant, rigid, pale, na- 
ked, 3—6' long. Frond coriaceous, pale, gla abrous, ovate- oblong, 6—15‘ 
3—8', pinnatifid to near the rhachis, with a pinnatifid apex. Segments 
or deounieet pinnae 12—30 on a side, separated by broad sinuses, linear- 
Veins transparent, close and oblique, with 
vate apices, the various groups and generally also the single veinlets 
