Hymenophyllum. | FILICES. 13 
A peculiar little species, usually found among moss on the upper branches of forest 
trees, or on the perpendicular faces of rocks. J am unable to maintain 4. Armstrongi 
as a separate species, for the stout marginal nerve, which is supposed to separate it from 
H. Cheesemanii, is an inconstant character, and fronds may be picked from the same 
rhizome with or without it. Usually, however, epiphytic specimens want the nerve, 
and rupestral ones possess it. 
V6. HE. minimum 4. Rich. Fl. Nouv. Zel. (1832) 91, t. 14, f. 2—-Minute, 
forming matted patches on rocks or on the trunks of trees. Rhizome much 
branched, filiform, Mee -creeping, glabrous or apeaely bristly. Stipes 
Wily, filiform, naked, 3 44 in. long. Fronds very small, +? in. long, broadly 
oblong- deltoid or ovate, erect or recurved, firm, pale- green when fresh, 
often reddish-brown when dry, pinnatifid or pinnate at the base. Segments 
2-6 pairs, close, spreading, simple or the lower ones forked, linear, obtuse, 
more or less concave, rigid, quite glabrous; margins spinulose-dentate. 
Sori never more than one to a frond, terminating the main rhachis, stipitate, 
quite free. Indusium rather large, obovate-cuneate, narrowed at the base, 
2-valved to the middle; valves spinulose on the back; margins rounded, 
sharply spinulose-dentate. Receptacle stout, often exserted in age.— 
A. Cunn. Precur. (1836) n. 242; Raoul Choix (1846) 39; Hook. f. Fl. Antarct. 1 
(1844) 103; Fl. Nov. Zel. 1 (1855) 12; Handb. N.Z. Fl. (1864) 353 ; Hook. 
and Bak. Syn. Fil. Shee 464; Thoms. N.Z. Ferns (1882) 36; Cheesem. 
Man. NZ. Hi. (1906} 939, | 
Leoni ae = eels am Bay, Be: Baile, Westland—Upper Hokitika 
Valley and Franz Josef Glacier, Rev. J. Holloway ; coast near Okarito, A. Hamilton / 
Otago—Resolution Island, Hnys! East Coast, Buchanan! A. Hamilicn! STEWART 
IstAnD: Not uncommon, 7’. Kirk/ AucKkuANnD Istanps: Scarce, Sir J. D. Hooker. 
A much misunderstood species; most collectors confusing it with small forms of 
H. Tunbridgense, from which, however, it is readily distinguished by the uniformly 
solitary and terminal sori, the indusium of which is spinulose on the back as well as on 
the margins. 
are | 1k, 
17. H. Tunbridgense Smith Fl. Brot. (1794) 1141.— Forming broad 
densely matted moss-like patches on rocks or on the trunks of trees. Rhizome 
much branched, long, wiry, creeping. Fronds variable in size, $-3 in. long, 
4-lin. broad, oblong or linear-oblong, pale-green, membranous, pinnate 
below, pinnatifid above. Stipes 3-14 in. long, slender, wiry, naked ; rhachis 
winged above, wingless below, or sometimes the wing is decurrent almost 
to the lowest pinna. Pinnae spreading, close or rather remote, usually 
fiabellately pinnatifid. Segments 3-12 to a pinna, linear, obtuse, flat, con- 
spicuously spinulose- -dentate. Sori terminal on a short lateral segment near 
the base of the pimnae on their upper margin and hence supra-axillary, 
rarely more than one to a pinna. Indusium suborhicular, compressed, its 
base slightly immersed in the segment, deeply 2-valved; valves thin, 
smooth on the back; margins conspicuously spinulose- dentate.—A. Rich. 
Fl. Nou». Zel. (1832) 91; “A. Cunn. Precur. (1836) n. 243; Raoul Chore 
(1846) 39; Hook. Sp. Fil. i (1846) 95; Hook. f. #£l. Nov. Fai (1855) 11 ; 
Handb. N.Z. Fl. (1864) 352; Ho ot. and Bak, Syn. Fil. (1873) 67; Thoms. 
N.Z. Ferns (1882) 35; Field N.Z. Ferns (1890) 65, t. 14, f. 7; ‘Oheesem. 
Man. N.Z. Fl. (1906) 939. HH. pusillum Col. o Trans. N.Z. Inst. xii (1880) 
365. (%) H. pygmaeum Col. l.c. xin (1881) 3876. H. zeelandicum Van der 
Bosch Ned. Arch. (1856) 77. 
Var. cupressiforme Hook. f. Fi. Nov. Zel. ii (1855) 11. — Fronds taller and nar- 
rower, more erect, 1-4 in. high. Pinnae distant ; Segments more rigid, narrower, often 
; 
