Schizostege. | FILICES. 631 
with 14 or 15 joints. Spores ovoid, compressed. — Two broad lateral 
fib. vas. fase. curved outward and joined above by a transverse on 
Synops. Fil. p. 172. — P. Vespertilionis, Labill. — Metten. Fil. Hort. Siow. 
p. 59, tab. 16. 
On ty two fragments, each holding a pair o f pinnae, were found mixed up with 
specimens of P. aquilina, without indication of locality, but it is probable that tae 
came from the western end of Oahu. Although the material is so scanty there can 
hardly be a as about the diagnosis, confirmed as it is by the ovoid spores, which are 
not found i ther group of Pteris pinnae in our specimens are only 8 ir ches 
in leng e e segments, the rrupted sori and s ngly anastomosing 
veins coincide New Zeal: and Australian forms. — The species has a w nge 
it is reported here for the fimt t 
Pteridium. — Involucre double. Veins free. Rhizome creeping. Spores 
tetraedro- globose. 
7. P. aquilina, L. — Hook. Sp. Fil. U1, 196. — Rhizome subterraneous, 
wide creeping, branching. Stip. distant, 1 ft. or more long, pale brown, 
hairy at the base only. Frond reclinate, coriaceous, dull green, shortly 
pubescent underneath, deltoid, 2—6 ft. long, 2—3 ft. broad, tripinnate 
below, simply pinnate above and ending in a pinnatifid apex, the rhachis 
ceolate, patent, the larger ones stipitate, 3—4' < 1 —l)/2’, ending in a 
short entire linear apex, pinnatisect ce ional into remote linear seg- 
ments which are confluent with broad or auriculate bases, but pinnate 
nearer the rhachis with free linear pinnules having 2 or 3 auricles or seg- 
ents above the broad or contracted base. Veins impressed, once or 
ns forked. Sori broad, continuous along margins and sinus. External 
and internal invol. ciliate, the latter hidden by the former, very delicate 
and soon evanescent. Fib. vas. fasc. numerous. ~~ P. decom oe Gaud. 
co) ft. Nat. name: «Kilau». Th n Brake, 
the whole pene ian the arctic to the fo tonsil zone. 
e var. caudata cat esculenta, hare ondary pinnae 
Pp 
ii few pairs 
near the apex and the tertiary near t e frond entire one or 
of segments n the arated by broad intervals, the boa sinus between entire 
ules lins sig the 1 n shady and protected places t ore com d 
fo an 1 which the tertiary pinnules are pectinately prnragenciega nearly the 
entire ee oe as in = of the Synopsis Fil. The Hawaiians do n to have eaten 
the 2 ah = the New Zealanders, but the wild pigs dig up the apart extensively in 
search 0. 
20. SCHIZOSTEGE, Gen. nov. 
Sori intra inal, linear, interrupted, 0 n prominent receptacles which 
are formed by intramarginal anastomoses of two fork-branches or by | 
