Page:Manual of the New Zealand Flora.djvu/972

932 decurved, opaque, dull brownish-green, 2–6 in. long, 1–2½ in. broad, broadly ovate to ovate-lanceolate, acuminate, 3–4-pinnatifid. Stipes 1–3 in. long, usually narrowly winged above, villous with scattered spreading hairs; rhachis narrowly winged throughout, rather slender, flexuous, more or less villous, as are the partial rhachides and costæ. Primary pinnæ closely placed, often over-lapping, lanceolate-deltoid; secondary rhombic-ovate, again once or twice pinnatifid. Ultimate segments crowded, very narrow, linear, obtuse, flat. Sori numerous, terminating the segments, free. Indusium broadly ovate, obtuse or subacute, broader than the segments, 2-valved to the base; valves smooth, entire.—''Kirk in Trans. N.Z. Inst. x. (1878) 395; Bak. in Annals Bot. v. (1890-91) 192; Thoms. N.Z. Ferns,'' 39.

4. H. australe, ''Willd. Sp. Plant.'' v. 527.—Forming matted patches on rocks or among moss, more rarely on the trunks of trees, pale-green when young, becoming lurid-green in age. Rhizome creeping, branched, wiry. Fronds erect or decurved, very membranous, 3–9 in. long, 1½–4 in. broad, triangular with usually a broad base, acuminate, quite glabrous, 2–3-pinnatifid. Rhachis with a broad much-crisped wing which extends almost to the base of the stipes. Primary pinnæ ¾–2 in. long, rhomboidal-lanceolate, spreading, often decurved at the tips, deeply pinnatifid; secondary again pinnatifid or irregularly forked. Ultimate segments narrow-linear, obtuse, quite entire, more or less crisped, rarely flat. Sori usually numerous, terminal on the segments, free. Indusium orbicular or broadly ovate, usually broader than the segments, 2-valved to the base; valves broad, rounded, entire or slightly erose.—''Bak. Annals Bot.'' v. (1890-91) 193. H. javanicum, ''Spreng. Syst.'' iv. 132; ''Hook. and Bak. Syn. Fil. 60; Thoms. N.Z. Ferns, 39; Field, N.Z. Ferns,'' 61, t. 15, f. 4. H. crispatum. ''Wall. Cat. 169; Hook. Sp. Fil. i. 105; Hook. f. Fl. Nov. Zel.'' li. 13; ''Handb. N.Z. Fl.'' 354. H. flexuosum, ''A. Cunn. Precur. n. 238; Raoul, Choix,'' 39.