Page:Manual of the New Zealand Flora.djvu/974

934 7. H. dilatatum, ''Swartz, Syn. Fil.'' 149, 373.—Large, very handsome, bright-green, clothing the trunks of trees or rotten logs. Rhizome long, stout, wiry, glabrous. Fronds variable in size, usually 9–18 in. long including the stipes, but luxuriant specimens often reach 2 ft. or more, the smaller specimens erect or decurved, the larger usually pendulous, 3–6 in. broad, ovate or ovate-lanceolate to linear-oblong, membranous, 3-pinnatifid. Stipes 2–6 in. long, terete, wiry, narrowly winged almost to the base; rhachis winged throughout, the wing flat, not crisped. Primary pinnæ 1½–3 in. long, ovate-lanceolate, cuneate at the base; secondary broad, almost subpalmate below, irregularly pinnatifid. Ultimate segments linear, often elongated and decurved, about $1⁄10$ in. broad, obtuse, flat, quite entire. Sori numerous, terminating the segments, sunk in the frond at the base. Indusium orbicular, cuneate at the base, 2-valved more than half-way down; valves convex, rounded at the tip, entire; clusters of sporangia often exserted.—''Hook. and Grev. Ic. Fil. t. 60; A. Cunn. Precur. n. 233; Raoul, Choix, 38; Hook. Sp. Fil. i. 104; Hook. f. Fl. Nov. Zel.''ii. 13; ''Handb. N.Z. Fl. 354; Hook. and Bak. Syn. Fil. 62; Thoms. N.Z. Ferns, 40; Field, N.Z. Ferns, 59, t. 16, f. 1. Trichomanes dilatatum, Forst. Prodr.'' n. 467.

8. H. demissum, ''Swartz, Syn. Fil.'' 147, 374.—Terrestrial or epiphytic, forming large patches. Rhizome long, wiry, creeping. Fronds erect or decurved, membranous, bright pale-green, 4–16 in. long including the stipes, 2–5 in. broad, ovate-deltoid or ovate-lanceolate, acuminate, 3–4-pinnatifid. Stipes 2–6 in. long, terete, smooth and glabrous, wiry, not winged above or very obscurely so; rhachis obviously winged in the upper part, but the wing much narrowed and sometimes obsolete below. Primary pinnæ spreading or ascending, rhombic-lanceolate or rhombic-triangular; secondary short, broad, again 1–2-pinnatifid. Ultimate segments $1⁄10$–$1⁄5$ in. long, $1⁄20$ in. broad, linear, obtuse, flat, quite entire. Sori small, very numerous at the tips of the segments, not confined to the lateral ones, not sunk in the frond. Indusium ovate, obtuse or subacute, 2-valved to the base; valves entire or lobed.—''A. Rich. Fl. Nouv. Zel. 92; A. Cunn. Precur. n. 245; Raoul, Choix, 39; Hook. Sp. Fil. i. 109; Hook. f. Fl. Nov. Zel.'' ii. 14; ''Handb. N.Z. Fl. 354; Hook. and Bak. Syn. Fil. 61; Thoms. N.Z. Ferns, 41; Field, N.Z. Ferns, 58, t. 18, f. 1. H. erecto-alatum, Col. in Trans. N.Z. Inst.'' xi. (1879) 431. H. megalocarpum, Col. I.c. xv. (1883) 318. H. polychilum, Col. I.c. xxiv. (1892) 395. Trichomanes demissum, ''Forst. Prodr.'' n. 468.