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



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Found near the coast and in valleys leading to the sea.

N.Is.: Ball Bay, R.D.Hoogland 11232 (NSW); loc. id., P.S.Green 2425 & 2426 (K); s. loc., A.Cunningham 42 (K).

Very close to P. tremula and, with it, part of the widespread P. tripartita Sw. complex.

2
Pteris
tremulaR.Br.
Prodr. 154(1810)


T: New South Wales, R.Brown; holo: BM; iso: K. The epithet comes from the Latin tremo (I quiver or tremble), in allusion to the easily quivering fronds in this fern.

Pteris baueriana Diesing ex Endl., Prodr. Fl. Norfolk. 12 (1833).T: Norfolk Island, 1804–1805, F.L.Bauer; holo: W.

[Pteris arguta auct. non Aiton: F.J.H. von Mueller, Fragm. 9: 78 (1875)]


Illustrations: D.L.Jones & S.C.Clemesha, Austral. Ferns & Fern Allies 2nd edn, 195, fig. 266 (1981); D.L.Jones, Encycl. Ferns 272, 273 (1987); P.J.Brownsey & J.C.Smith-Dodsworth, New Zealand Ferns & Allied Pl. 54, fig. 54, t. 10F (1989).

Rhizome short, erect; apex covered with long, narrow, pale brown scales. Fronds tufted, 30–120 cm tall; stipe base with a few pale, narrow scales, 2–3 mm long, or scales absent; lamina outline ovate-deltoid, 25–60 cm long, 15–40 cm broad, usually ±membranous, bipinnate or bipinnatifid; bipinnate from base for 4–5 (–7) subopposite divisions, then pinnate for 5–8 divisions, with only a short apical portion deeply pinnatifid; upper midrib of pinnae slightly flanged with 'teeth' vestigial or lacking; pinnules very narrow (those of median pinnae 10–15 (–20) mm long, 1.5–3 (–5) mm broad), acute to ±blunt; veins simple or once forked, free. Sori marginal, continuous; apex of pinnules sterile, 1–2 (–3) mm long, somewhat blunt.

Tender Brakefern.

Norfolk Is., Lord Howe Is. On Norfolk Is. this species is not as common as P. kingiana; widespread on Lord Howe Is. Also known from Australia, New Zealand, the Kermadec Is. and Fiji.

Believed to occur in similar habitats to P. kingiana, or more commonly in forested areas.

N.Is.: New Farm Rd, 1985, D.Nobbs (K); spontaneous in a garden, New Cascades Rd, P.S.Green 2424 (K). L.H.Is.: W ridge of Malabar, P.S.Green 1950 (K); base of Mt Lidgbird, J.McGillivray 699 (K); W of Intermediate Hill, J.Pickard 3359 (NSW).

This species is part of the difficult P. tripartita Sw. complex. The Australian plants tend to have the narrowest pinnules.


3
Pteris
micropteraMett. ex Kuhn
Linnaea 36: 92(1869)


T: Lord Howe Island, W.G.Milne; syn: ?B n.v.; isosyn: K; & Stange: syn: ?B n.v. The epithet comes from the Greek micros (small) and pteros (a wing), in allusion to the (comparatively) narrow wing on the pinna rachis.

Pteris comans G.Forst. var. ß Hook., Sp. Fil. 2: 219 (1858).

[Pteris milneana auct. non (Hook.) Baker: C.Moore in E.S.Hill, Votes & Proc. Legislative Assembly New South Wales 4 (1870)]

[Pteris comans auct. non G.Forst.: F.J.H. von Mueller, Fragm. 9: 78 (1875); G.Bentham, Fl. Austral. 7: 733 (1878), p.p.; W.B.Hemsley, Ann. Bot. (London) 10: 263 (1896); W.R.B.Oliver, Trans. & Proc. New Zealand Inst. 49: 123 (1917)]


Illustration: D.L.Jones, Encycl. Ferns 270 (1987).

Rhizome stout, erect; apex covered with short triangular brown scales. Fronds tufted, erect, 50–200 cm tall, shining; stipe base with no scales or a few short dark brown scales; lamina outline broadly deltoid, 30–150 cm long, slightly coriaceous, bipinnate at base for 1 or 2 divisions, pinnate for 3 or 4 divisions, then apical portion deeply pinnatifid with a continuous portion of lamina along midrib of pinnules between segments 0.5–1.5 mm broad; midrib of pinnae above slightly flanged, with a blunt tooth 0.5–1 mm long at the junction of each pinnule midrib; pinnules narrow (those of median pinnae (2–) 3–4 (–6) cm long, 4–6 mm broad); veins netted. Sori submarginal, continuous; pinnule apex sterile, 2–7 mm long, dentate, long-acute.

Fig. 104H.v*****_f*****.jpg

Lord Howe Is. Endemic, widespread and common throughout the Island at lower altitudes.

L.H.Is.: c. 180 m NE of Old Settlement Beach, J.C.Game 65/6/11 (K); Transit Hill, M.M.J. van Balgooy 1005 (NSW); Erskine Valley, P.S.Green 1670 (A, K).

This species is part of the widespread and complex P. comans group. A rare form with forked proliferation of the pinna apices was described from Lord Howe Is. material as P. comans var. furcata Bonap., Notes Ptéridologiques 5: 128 (1917).


4
Pteris
zahlbrucknerianaEndl.
Prodr. Fl. Norfolk. 13(1833)


T: Norfolk Island, F.L.Bauer; holo: ?W n.v. Named after Johann Baptist Zahlbruckner (1782–1851), prominent Austrian amateur botanist.

Pteris endlicheriana J.Agardh, Recens. Spec. Pterid. 66 (1839); Litobrochia endlicheriana (J.Agardh) Hook., Gen. Fil. t. 65B (1842); Pteris comans var. endlicheriana (J.Agardh) Hook. & Baker, Syn. Fil. 171 (1867).T: Norfolk Island, [A.Cunningham 60]; holo: K.

[Pteris comans auct. non G.Forst.: J.H.Maiden, Proc. Linn. Soc. New South Wales 28: 732 (1904); R.M.Laing, Trans. & Proc. New Zealand Inst. 47: 14 (1915); R.M.Laing, Trans. & Proc. New Zealand Inst. 48: 233 (1916); J.S.Turner et al., Conservation Norfolk Is. 31 (1968)]


Illustrations: W.J.Hooker, Gen. Fil. t. 65B, figs 6, 7 (1842); W.R.B.Oliver, Trans. & Proc. New Zealand Inst. 48: 233, fig. 3 (1916).

Rhizome short, erect; apex of rhizome and base of stipe covered with lanceolate-triangular brown scales, 5–7 mm long. Fronds tufted, erect, c 1 m high; lamina outline broadly deltoid, 60 cm long and broad, membranous; bipinnate at base for 1 or 2 divisions, pinnate for 4 divisions, then apical portion deeply pinnatifid with a continuous portion of lamina along midrib of pinnules between segments 3–5 mm broad; midrib of pinnae above raised, with a blunt 'tooth' 0.25–0.5 mm long associated with junction of each pinnule midrib; pinnules slightly curved (those of median pinnae 15–40 mm long, (6–) 8–10 mm broad), acute; veins netted. Sori almost marginal, continuous; pinnule apex sterile, serrate, 2–10 mm long.

Netted Brakefern.

Fig. 104I.v*****_f*****.jpg

Norfolk Is. Endemic.

Part of the P. comans complex.




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