934 FILICES. [Hymenophylium. 
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 speci- 
mens often reach 2 ft. or more, the smaller specimens erect or de- 
curved, the larger usually pendulous, 3-6in. broad, ovate or ovate- 
lanceolate to linear-oblong, membranous, 38-pinnatifid. Stipes 
2-6 in. long, terete, wiry, narrowly winged almost to the base; 
rhachis winged throughout, the wing flat, not crisped. Primary 
pinne 14—3in. long, ovate-lanceolate, cuneate at the base ; secona- 
ary broad, almost subpalmate below, irregularly pinnatifid. Ulti- 
mate segments linear, often elongated and decurved, about 4, 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 ex- 
serted.—Hook. and Grev. Ic. Fil. t. 60; A. Cunn. Precur. n. 233 ; 
fiacul, 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. Tri- 
chomanes dilatatum, Forst. Prodr. n. 467. 
NortH anp Soury IsLtanps, STEWART ISLAND, CHATHAM IsLANDS: Abund- 
ant in damp woods throughout. AuckLAND IsLANDS: Sir J. D. Hooker 
(Handbook). Sea-level to 3000 ft. 
Also in several of the Polynesian islands and in Java. One of the most 
handsome species of the genus. 
8. H. demissum, Swartz, Syn. Fil. 147, 574.—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-lanceo- 
late, acuminate, 3-4-pinnatifid. Stipes 2-6in. long, terete, smooth 
and glabrous, wiry, not winged above or very obscurely so; rha- 
chis obviously winged in the upper part, but the wing much nar- 
rowed and sometimes obsolete below. Primary pinnz spreading 
or ascending, rhombic-lanceolate or rhombic-triangular; secondary 
short, broad, again 1-2-pinnatifid. Ultimate segments j4—+in. 
long, 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. i. 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. l.c. xv. (1883) 
818. H. polychilum, Col. l.c. xxiv. (1892) 395. Trichomanes de- 
missum, Forst. Prodr. n. 468. 
