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



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Especially characteristic of cool, montane cloud-forests.

G.Bentham, Filices, Polypodium, Grammitis, Fl. Austral. 7: 763, 774–777 (1878).

1 Fronds glabrous; sori ±confined to upper part of frond

1. G. diminuta

1: Fronds setose; sori usually throughout entire length of frond




2 Setose hairs 0.5–2 mm long; fronds (including stipe) 3–8 cm long

2. G. nudicarpa

2: Setose hairs 2–4 mm long; fronds (including stipe) 6–25 cm long

3. G. wattsii



1
Grammitis
diminuta(Baker) Copel.
Philipp. J. Sci. 80: 141, fig. 13(1952)


Polypodium diminutum Baker in W.J.Hooker & J.G.Baker, Syn. Fil. 2nd edn, 507 (1874).T: Lord Howe Island, C.Moore [31]; holo: K. The epithet comes from the Latin diminutio (to decrease, diminish), in allusion to the tapered frond base.

Polypodium howeanum Watts, J. Proc. Roy. Soc. New South Wales 49: 388 (1915).T: Lord Howe Island, W.W.Watts; holo: NSW.

[Polypodium australe auct. non (R.Br.) Mett.: F.J.H. von Mueller, Fragm. 9: 78 (1875), p.p.]


Illustrations: E.B.Copeland, loc. cit.; D.L.Jones, Encycl. Ferns 54 (1987).

Epiphyte. Rhizome stoutish, erect; scales lanceolate, long-pointed, somewhat flexuous, light brown. Fronds simple; stipe merging shortly and imperceptably into attenuate base of lamina, glabrous; lamina very narrowly elliptic, 3–15 cm long, 0.4–0.8 cm broad, entire, ±recurved when desiccated, long-attenuate at apex with tip blunt, ±coriaceous, glabrous; veins obscure. Sori elongate, 1 row on each side of prominent midrib in upper part of frond, with a tendency to coalesce.

Fig. 102G–H.v*****_f*****.jpg

Lord Howe Is. Endemic. Occurs on the upper slopes and tops of Mts Gower and Lidgbird.

Confined to cloud-forest.

L.H.Is.: base of E cliffs of Mt Lidgbird, near Goat House, I.R.Telford 7080 & M.D.Crisp (CBG, NSW); summit plateau, Mt Gower, P.S.Green 1995 (K); summit of Mt Lidgbird, C.Moore 83 (K).


2
Grammitis
nudicarpaCopel.
Univ. Calif. Publ. Bot. 18: 222(1942)


T: Lord Howe Island, coll. unknown, 'No. 908,302.93'; holo: L n.v. The epithet comes from the Latin nudus (naked) and the Greek carpos (fruit), in allusion to the sporangia not bearing hairs.

Illustration: E.B.Copeland, Philipp. J. Sci. 80: 143, fig. 15 (1952).

Very small epiphyte. Rhizome short; scales on apex relatively short, long-pointed, dark brown. Fronds simple; stipe merging shortly and imperceptably into attenuate base of lamina, setose; lamina very narrowly oblanceolate, 2–8 cm long, 0.3–0.8 cm broad, entire, relatively abrupt, rounded and blunt at apex, setose with fine, dark brown hairs 0.5–2 mm long throughout; veins obscure. Sori elliptic, in 1 row on each side of midrib, usually throughout entire length of frond, with dark setose hairs.

Fig. 102I–J.v*****_f*****.jpg

Lord Howe Is. Endemic. Rare and confined to the summit areas on Mts Gower and Lidgbird.

Found only in densely shaded areas.

L.H.Is.: E side of Mt Lidgbird, J.C.Game 69/182 (K); E side of Mt Lidgbird, M.M.J. van Balgooy 1097 (L, NSW); summit of Mt Gower, J.P.Fullagar & Lind 21 p.p. (K).


3
Grammitis
wattsiiCopel.
Univ. Cal. Publ. Bot. 18: 222(1942)


T: as for Polypodium pulchellum Watts.

Polypodium pulchellum Watts, J. Proc. Roy. Soc. New South Wales 49: 386 (1916), non Salisb. (1796).T: upper slopes of Mt Gower, Lord Howe Island, W.W.Watts?; holo: NSW; iso: K. Named after the Rev. W.W.Watts (1856–1920), prominent Australian cryptogamist about the turn of the century.

[Polypodium hirtum auct. non (Blume) C.Presl: W.J.Hooker in W.J.Hooker & J.G.Baker, Syn. Fil. 320 (1864), p.p.]

[Polypodium hookeri auct. non Brack.: F.J.H. von Mueller, Fragm. 7: 104 (1870); G.Bentham, Fl. Austral. 7: 104 (1878), p.p.]


Illustration: E.B.Copeland, Philipp. J. Sci. 80: 143, fig. 14 (1952).

Epiphyte. Rhizome erect or shortly creeping; scales dense, narrow, long-pointed, chestnut-brown. Fronds simple; stipe 0.5–5 cm long, merging imperceptably into attenuate base of lamina, densely setose with chestnut-brown hairs 2–4 mm long; lamina very narrowly elliptic-linear, 5–20 cm long, 0.4–1.2 cm broad, entire, gradually narrowed at apex, tip blunt, setose throughout with fine, dark or chestnut-brown hairs, especially on margins; veins obscure. Sori round to elongate-elliptic, 1 row on each side of midrib throughout length of frond, with denser groups of setose hairs.

Fig. 102K–L.v*****_f*****.jpg

Lord Howe Is. Endemic. Confined to the tops of Mts Gower and Lidgbird.

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