Trichomanes. | FILICES. 17 
margins ciliated, not dilated nor bordered. Receptacle included.—Thoms. 
N.Z. Ferns (1882) 45; Field N.Z. Ferns (1890) 70, t. 5, f. 4; Cheesem. 
Man. N.Z. Fl. (1906) 943; Jl. N.Z. Fl. ii (1914) t. 236.  Hymenophyllum 
Lyallii Hook. f. Fl. Nov. Zel. ii (1855) 16; Handb. N.Z. Fl. (1864) 355. 
Norta AND SoutH Is~tanps.—From the Great Barrier Island and Cape Colville 
southwards, not uncommon in dense moist forests, but rare or absent on the east coast 
of the South Island, plentiful in Westland and the south-west of Otago. Srewarr 
Istanp: Mount Anglem, 7’. Kirk. Sea-level to 3000 ft. 
Exactly intermediate between Trichomanes and Hymenophyllum, so far as the 
structure of the indusium is concerned. It is paces a matter of taste as to which genus 
it sgh be referred to. 
“3! T. humile Forst. f. Prodr. (1786) n. 464.—Small, pendulous from the 
faces of rocks or bank-sides. DES: much branched, slender, creeping, 
intermatted. Pup. gon slender, {-+ in. long, winged almost to the base. 
Fronds 1-3 in. long, +-2 in. broad, ees or linear-oblong, quite glabrous, 
membranous, dark aul. -green, irregularly 2-pinnatifid ; rhachis winged 
throughout. Pinnae ascending, forked or again pinnatifid. Ultimate 
segments linear, flat, obtuse, quite entire, a single costa in each segment, 
spurious venules wanting. Sori solitary, sunk in the tip of a short lateral 
segment and on the upper side of a pinna near its base. Indusium tubular 
or trumpet-shaped ; mouth expanded, shortly 2-lipped. Receptacle usually 
exserted as a long capillary bristle—Hook. f. Ic. Fil. (1829) t. 35: Hook. 
Sp. Hal. i (1846) 123; Hook. f. Fl. Nov. Zel. it (1855) 16; Handb. N.Z, Fl. 
(1864) 356; Hook. and Bak. Syn. Fil. (1873) 80; Thoms. N.Z. Ferns 
(1882) 46; Mield N.Z. Ferns (1890) 70, t. 5, n. 8; Cheesem. Man. N.Z. 
Fl. (1906) 944. 
NortuH Isnanp: From the Kermadec Islands (W. R. B. Oliver /) southwards, not 
uncommon in dark woods. Sours Istanp: Nelson—Happy Valley, A. Grant. Marl- 
borough—Queen Charlotte Sound, Banks and Solander. Canterbury—Banks Peninsula, 
Armstrong. Sea-level to 2000 ft. 
Also in Australia and the Pacific islands, stretching northwards to New Guinea, 
Java, and Formosa. 
4 -T. venosum Ft. Br. Prodr. (1810) 159.—Pendulous, usually clothing 
the trunks of tree-ferns. Rhizome long, slender, branched, wide-creeping, 
densely tomentose. Stipes 4-2in. long, very slender, capillary, naked. 
Fronds 1-4in. long, ?-1}in. broad, linear or lanceolate to oblong, very 
delicate and membranous, translucent, pale-green, shining, quite glabrous, 
pinnate ; rhachis broadly winged above, naked below. Pinnae 4-8 pairs, 
very ‘variable in shape and amount of cutting, from linear and undivided 
to rhomboidal-lanceolate and deeply and irregularly pinnatifid. Segments 
or lobes flat, obtuse, irregularly sinuate; costa flexuous, with numerous 
alternate once or twice dichotomous secondary veinlets. Sori generally 
solitary on each pinna and sunk in a short lobe on the upper margin near 
the base, but in specimens with broad lower pinnae there may be 2-4 sori 
placed irregularly on both the upper and lower margins. Indusium tubular ; 
mouth dilated all round, entire or very slightly 2-lipped. Receptacle 
usually exserted, capillary.— 4. Cunn. Precur. (1836) n. 229; Raoul Choix 
(1846) 38; Hook. Sp. Fil. 1 (1846) 132; Hook. and Grev. Ic. Fil. (1829) 
t. 78; Hook. f. Fl. Nov. Zel. ti (1855) 17; Handh. N.Z. Fl. (1864) 367; 
Hook. and Bak. Syn. Fal. (1873) 82; Benth. Fl. Austral. vii (1878) 702 ; 
Thoms. N.Z. Ferns (1882) 47; Pield N.Z. Ferns (1890) 71, t. 14, f. 4; 
