P. S. Green Royal Botanic Gardens, Kew, Richmond, Surrey, tw9 3AB, England



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Frequent in shaded valleys in the National Park, often near streams.

N.Is.: between Palm Glen and Red Rd, M.Lazarides 8093 (K, NSW); valley below Now-Now Ridge, P.Ralston 20 (NSW); valley S of Mt Bates, P.S.Green 1895 (K).

2
Diplazium
australe(R.Br.) N.A.Wakef.
Victorian Naturalist 58: 142(1942)


Allantodia australis R.Br., Prodr. 149 (1810); Asplenium australe (R.Br.) Brack., U.S. Expl. Exped., Filic. 16: 173 (1854), non (L.) Sw.T: Tasmania, R.Brown; holo: BM. The epithet refers to this plant's southern or austral origin.

[?Athyrium brevisorum auct. non (Wall.) T.Moore: J.H.Maiden, Proc. Linn. Soc. New South Wales 28: 735 (1904)]


Illustrations: B.D.Duncan & G.Isaac, Ferns & Allied Pl. Victoria, Tasmania & S. Australia 180, 181, figs. 18.3, 18.4 (1986); S.B.Andrews, Ferns Queensland 77, fig. 5.2 (1990); P.G.Wilson in G.J.Harden, Fl. New South Wales 1: 58 (1990).

Rhizome ±erect. Fronds tripinnate; stipe 40–70 cm tall, light brown shading to black at base, with a few narrow, dark brown scales c. 5 cm long at base and occasionally a little above; lamina broadly triangular in outline, 40–75 cm long, 30–70 cm broad; larger secondary pinnae 3–10 cm long, with 7–12 pinnules; tripinnate pinnules 5–20 mm long, not narrowed at base, decurrent onto a winged costule, bluntly toothed at margin, blunt at apex. Sori elongate, 1–2 mm long, 3–5 per pinnule side, rarely the basal sori double; indusia lightish brown.

Austral Lady Fern, Large Upside-Down Fern.

Norfolk Is. Uncommon in the National Park. Also known from the North Is. of New Zealand, and eastern Australia (Qld to Tas.).

Found in similar habitats to D. assimile.

N.Is.: below Palm Glen and Red Rd, M.Lazarides 8095 (K, NSW); valley S of Mt Bates, P.S.Green 1894 (K); s. loc., R.M.Laing (CHR).


3
Diplazium
melanochlamys(Hook.) T.Moore
Index Fil. 332(1861)


Asplenium melanochlamys Hook., Sp. Fil. 3: 259 (1860).T: Lord Howe Island, J.MacGillivray 702 & loc. id., W.G.Milne 336; syn: K. The epithet comes from the Greek melanos (black, dark) and chlamys (a cloak, mantle), in allusion to the almost black indusia in this fern.

Rhizome short, fern ±tufted. Fronds 2- or 3-pinnate; stipe c. 40 cm tall, with narrow, very dark brown scales; scales 1–2 cm long at base; lamina broadly triangular in outline, 60–100 cm long, 40–60 cm broad; larger secondary pinnae 5–8 cm long, with 8–10 serrate pinnules; tripinnate pinnules 5–10 mm long, not narrowed at base, decurrent onto a winged costule, bluntly toothed at margin, blunt to truncate at apex. Sori elongate, 2–4 mm long, 2–5 per pinnule side, the basal sori often double; indusia very dark brown, almost black, shining.

Fig. 105G–I.v*****_f*****.jpg

Lord Howe Is. Endemic. Found in the southern half of the Island.

An occasional or locally abundant fern in the forest.

L.H.Is.: Smoking Tree Ridge, R.D.Hoogland 8735 (CANB, NSW); E slopes of Mt Lidgbird, P.S.Green 1686 (A, K); summit of Mt Gower, J.Pickard 2615 (NSW).


gen.
ATHYRIACEAE
22. LUNATHYRIUM

LunathyriumKoidz.
Acta Phytotax. Geobot. 1: 30(1932)
from the supposedly somewhat lunate, or moonshaped, indusia in these ferns, and Athyrium, a closely related genus

Type: L. pycnosorum (H.Christ) Koidz.

Terrestrial fern. Rhizome erect or creeping. Fronds pinnate to tripinnate; stipe approximately equal to lamina; rachis and costae grooves not confluent at their junctions; hairs on rachis, costae and lamina multiseptate; veins free. Sori circular or elongate, with or without indusia.

A genus of 40 or more species, especially found in tropical and subtropical Asia; 1 native species on Norfolk Is.

This genus is frequently treated as a section of Deparia, and in that genus the following plant would be called D. petersenii subsp. congrua (Brack.) M.Kato (see M.Kato, J. Fac. Sci. Univ. Tokyo Sect. III 13: 426, 1984).


1
Lunathyrium
japonicum(Thunb.) Sa.Kurata
J. Geobot. 9: 99(1961)


Asplenium japonicum Thunb., Syst. Veg. 14th edn, 934 (1784); Diplazium japonicum (Thunb.) Bedd., Ferns Brit. India Suppl. 12 (1876); Athyrium japonicum (Thunb.) Copel., Philipp. J. Sci. 3: 290 (1908).T: Japan, C.P.Thunberg; holo: ?S n.v. The epithet is the Latin for Japan, whence it was first described.

Illustrations: B.D.Duncan & G.Isaac, Ferns & Allied Pl. Victoria, Tasmania & S. Australia 182, fig. 18.5 (1986); D.L.Jones, Encycl. Ferns 19 (1987); S.B.Andrews, Ferns Queensland 73, fig. 5.1A (1990).

Rhizome creeping; scales thin, brown. Fronds pinnate, deeply pinnatisect; stipe 15–25 cm tall, scaly at base, scales becoming scattered and pale above with scattered multiseptate hairs; lamina 20–35 cm long; the lowermost pinnae 10–25 cm long, broadest in middle; pinnule lobes 10–25 mm long, bluntly toothed, obtuse-rounded at apex; hairs below on rachis, costae and veins multiseptate. Sori linear-oblong, 1–2 mm long, 3–5 per side of pinnule lobes, occasionally doubled; indusia pale brown, thin.

Norfolk Is. Rare. Also found from Japan through SE Asia to eastern Australia, North Is. of New Zealand, and Polynesia.

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