Sadleria.| FILICES. «683 
2—4' xX a lanceolate, falcate. Bsc (about 12 pairs) obliquely 
ovate to trapeziform, 3—6' xX 1'/2—3", obtuse, with the base contracted 
and often nee in the upper ae the lowest opposite, notched 
or lobulate. Veins obscure, with few and broad costal arches, Sori 
about 1/2 the length of the pinnule, not close to the costa, rarely inter 
inte Invol. dark, soon evanescent. Sporangia large, with 24—28 ring- 
Spo pale, at first enveloped by a dense layer of ae clavate 
Pesttine which disappear with age, leaving only a rough surfac ib. 
vas. fascicles 3. — Synops. Fil. p. 187. — reais squarrosum , ed 
Bot. Bon. tab. 2. — B. polystichoides, Brack. 1. 
Not frequent, in deep forests: Hawaii! Kohala range; ae “ia: Oahu! 
8 var. tripinnatifida. — Pinnules (6—7’ long) again itis cut into 
2 or 3 pairs of rounded oblong lobes, with the apex entire. So ori inter- 
rupted and short, so as to appear like rounded ae at the base 
of each lobe, which soon lose their involucres by shrinkage. In this state 
a pinnule resembles exceedingly an entire frond of the smallest size of 4. 
Molokai 
1. var. intermedia. — ee (12—20 pairs) sessile with a broad base, 
oblong, rounded, entire, 2—3’ long. Pinnae less than ‘/2‘ broa 
High mountains of W. Maui and oepatee gs of Kalae, REESE A form inter- 
mediate between this and the preceding spec 
& var. depauperata. — Dwarfed. Stipes 1—11/2‘, filiform, purplish or 
dark-brown, paleaceous with fe ous lanceolate subentire — 
brownish when 2—3' 1‘, pinnate with 5—7 pinnae on a side, 
besides the subentire apex. Pinnae horizontal, subsessile, the upper ovate 
or suborbicular, the lower with a similar terminal lobe and 1 or 2 pairs 
of smaller sessile lateral lobules. Veins hidden, the costule even scarcely 
traceable at the base of the round lobe. Sori large, roundish or oblong, 
one at the base of each lateral lobe, two along the midrib of the simple 
pinnae or terminal lobes on elongate receptacles, apparently naked. Spo- 
rangia large, brown, shining, their ring with 18—26 cells. Spores trans- 
parent, seit bose, surrounded by a dense layer of elongate sete 
appearing under the microscope like a circular wing. Fib. vas. fascicles 
with 1 or 2 very faint ones near the ores — Polypodium pi 
pastes unisorum, Baker. Synops. Fil. p. 
uai! on the Fann plateau between Hanalei and Waimea, where it was collected b 
eho fe Mr. E. Johnson, Although the sori appear naked and the anastomosis cannot 
be traced on account of the thickness of the frond, yet I have no doubt that the poo 
sent by me to Kew belongs nei Especially the liar character of the spo 
served by me in any other Hawaiian fern, which, however, entirely agrees with that of reed 
immature spores of 8. es supports this view 
