134 FLORA OF TASMANIA. [ Filices. 
pinnatis erectis decurvisve, pinnis distantibus decurvis margine superiore precipue parce pinnatifidis, seg- 
mentis linearibus argute dentatis simplicibus pinnatifidisve, involucris supra-axillaribus liberis obovato- 
oblongis tumidis, valvis integerrimis, rachi superne alata.—77. N. Zeal. ii. 1l. H Wilsoni, Hook. Brit. 
Fl. ed.i. p. 450; Sp. Fil.i. p. 95; Wils. in Engl. Bot. Suppl. t. 2686. H. Tunbridgense, P, Kunze, Plant. 
Afr. Aust. 7. (Gunn, 1511.) 
Haz. Common, especially on trunks of trees, in damp forests.—(v. v. 
Disrr1B. New South Wales, Victoria, New Zealand, Chili, Fuegia, South Africa, Great Britain. 
This differs from H. Tunbridgense, B. cupressiforme, only in the entire lips of the involucre, otherwise these 
plants appear identical. I find the amount of toothing in the valves of H. Tunbridgense, ß, to vary extremely, 
sometimes amounting to a mere erosion, and at others the lips being even laciniated and spinulose, so that I can 
hardly doubt these two proving eventually the same species. 
"$ B. Fronds quite glabrous, or with the costa and rachis only setose ; margins neither toothed nor ciliated. 
a. Fronds pinnatifid, rarely pinnate below ; rachis, and generally the stipes, winged. 
3. Hymenophyllum rarum (Br. Prodr. 159) ; fronde pendula tenera oblongo-ovata v. lineari- 
elongata glaberrima bipinnatifida v. basi pinnata, segmentis brevibus planis latis integerrimis, involucris late 
ovatis rhombeisve terminalibus fronde immersis compressis, valvis latis brevibus integerrimis, stipite rachique 
capillari.— Hook. Sp. Fil.i. p.101; FT. N. Zeal.1.121. H. semibivalve, Hook. et Grev. Ic. Fil. t.83. H. fu- 
marioides, Bory, in Willd. Sp. Pl. v. 526. H. imbricatum, Col. in Tasm. Phil. Journ. (Gunn, 47, 1512.) 
Has. Abundant in damp forests, often clothing trunks of Dicksonia Antarctica.—(v. v.) 
Disrris. New Zealand, South Chili and Fuegia, South Africa, Ceylon. 
A very beautiful Fern, varying extremely in size and habit wherever found. It clothes trunks of Tree-Ferns 
with a glistening garment of the most delicate and beautiful green, the fronds hanging down and overlapping one 
another in profusion. It may be readily recognized by its hair-like stipes and rachis, transparent membranous 
fronds, and broad, short, terminal involucres.— Fronds 1-8 inches long, broad or narrow, linear, bipinnatifid. 
Pinne short, often very irregular and unequal, distant, or close and overlapping one another. Segments short 
broad. Jwvolucres rhomboid, wholly sunk in the ends of the segments, very flat, with short, broad, entire lips. 
4. Hymenophyllum crispatum (Wall. Cat. 169) ; erectum, fronde ovata v. lineari-ovata bi-tri- 
pinnatifida, segmentis linearibus planis undulatisve, involucris terminalibus liberis sessilibus ovatis turgidis 
ad basin partitis, valvis integerrimis erosisve, rachi stipiteque late alatis, ala plana undulata v. crispata.— 
Hook. et Grev. Ie. Fil. t. 115 Hook. Sp. Fil. i.p. 105. H. flabellatum, Br. Prodr. 159, non Lab. H. 
atrovirens, Col. in Tasm. Phil. Journ. H. flexuosum, A. Cunn. Prodr. Fl. N. Zeal. ; Hook. Sp. Fil. l.c. 
Je, Pl. t. 962. (Gunn, 1513.) 
Has. Damp woods, abundant on stones and trunks of trees, etc.—(v. v.) 
DistriB. Victoria, New Zealand, Malay Islands, Ceylon, Himalaya Mountains. 
Fronds 2-8 inches high, erect, lurid green, bi-tripinnatifid. Segments linear, 41; inch broad, flat, undulated or 
erisped. Jnvolucres often very numerous, terminal, ovate, turgid, broader than the segments of the frond, deeply 
divided into two valves, whose lips are quite entire or erose. Stipes and rachis with a broad, flat or crisped wing. 
Rhizome quite glabrous, creeping. 
b. Frond pinnate below. Rachis not winged below. 
5. Hymenophyllum flabellatum (Lab. Fl. Nov. Holl. ii. p. 101. t. 250. f. 1, non Br. Prodr.) ; 
glaberrimum, nitens, fronde pendula v. decurva lineari-oblonga rarius ovata, pinnis plerumque basi cuneatis 
late ovatis flabellatim dilatatis pinnatifidis v. bipinnatifidis, segmentis linearibus furcatis brevibus caudato- 
elongatisve, involucris segmenta lateralia terminantibus orbicularibus oblongisve ad basin fere bivalvibus, 
