Hymenophyllum.] FILICES. 933 
5. H. atrovirens, Col. im Tasm. Journ. Nat. Se. (1845) 26. — 
Usually terrestrial. Rhizome slender, wiry, creeping. Fronds 
few, somewhat rigidly erect, membranous, dull dark-green, 2-6 in. 
high, 3-lin. broad, linear-oblong or lanceolate, quite glabrous, 
2-pinnatifid. Stipes about half the length of the frond, winged 
almost to the base; rhachis flexuose, winged throughout, wings 
flat, not crisped. Pinnze 5-10 on each side, alternate, the lowest 
usually the largest, 4-2in. long, erecto-patent, irregularly pinnati- 
fid. Segments simple or forked, linear, obtuse, flat, quite entire. 
Sori few, terminating the segments, quite free. Indusium small, 
ovate, 2-valved almost to the base, slightly broader than the seg- 
ments; valves obtuse or subacute, entire or jagged.—H. javanicum 
var. atrovirens, Hook. and Bak. Syn. Ful.60. H.montanum, Kirk in 
Trans. N.Z. Inst. x. (1878) 3894; Thoms. N.Z. Ferns, 40; Field, N.Z. 
Ferns, 61, t. 28, f. 1. 
Nort Isnanp: Auckland—Bay of Islands, Miss Clarke! Whangarei, 
T. F.C.; ravines at Mamaku, near Rotorua, J. Stewart! Lake Waikaremoana, 
Colenso! Souru Isnanp: Nelson—Blind Bay, Kingsley. Otago—Mountains at 
the head of Lake Wakatipu, M7s. Mason ! Sea-level to 2500 ft. 
I have ventured to restore Mr. Colenso’s H. atrovirens to the rank of a 
species, for although undoubtedly very close to A. australe it appears to differ 
sufficiently in the much smaller and narrower more sparingly divided frond, in 
the flat (not crisped) wings to the rhachis and stipes, and in the narrower seg- 
ments and smaller ovate indusia. Mr. Kirk’s H. montanwm is clearly the same 
plant, with the indusia conspicuously jagged. Whether the Australian plant 
included under atrovirens by Baker is also identical I am unable to say, not 
haying seen specimens. 
6. H. pulcherrimum, Col. in Tasmanian Journ. Nat. Scr. (1845) 
25.—Forming dense tufts on the branches and trunks of trees. 
Rhizome short, stout, densely clothed with shining red-brown 
bristly scales; rootlets woolly. Fronds very handsome, pale-green, 
erect or pendulous, 9-30 in. long including the stipes, 2-6 in. broad, 
ovate-lanceolate or linear-oblong, acuminate, membranous, flaccid, 
quite glabrous, 3-4-pinnatifid. Stipes 2-6in. long, winged to the 
base; rhachis also with a narrow wing throughout its length, wings 
not crisped. Primary pinne 14-3 in. long, rhomboidal-lanceolate, 
2-pinnatifid down to a narrowly winged flexuous rhachis. Ultimate 
segments simple or forked, linear, flat, obtuse or retuse, quite entire. 
Sori terminating short lateral segments, sometimes apparently 
axillary, quite free. Indusium orbicular, 2-valved to the base; 
valves convex, quite entire.—Hook. Sp. Ful. i. 103, t. 8374; Hook. f. 
Fl. Nov. Zel. ii. 18, t. 74; Handb. N.Z. Fl. 354; Hook. and Bak. 
Syn. Ful. 62; Thoms. N.Z. Ferns, 41; Field, N.Z. Ferns, 60, t. 20, 
£6. 
NorrH Istand: Mountainous forests of the interior, from Te Aroha and 
Lake Waikaremoana southwards. Sour Isuanp: Rare and local in Nelson, 
Marlborough, and Canterbury; abundant in Westland and Otago. SrTpwaRtT 
IsLanD: Paterson’s Inlet, Kirk ! Sea-level to 3000 ft. 
A very distinct species, confined to New Zealand. 
