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



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Widespread in forested and shaded areas, including disturbed ground.

N.Is.: Now-Now Valley, R.M.Laing (CHR); Cascade, P.Ralston 63 (NSW); s. loc., A.Cunningham 38 (57) (K). L.H.Is.: Mt Gower, 1908, C.Hedley & W.S.Dunn (NSW); Mt Lidgbird, A.C.Beauglehole 6275 (MEL); Soldiers Cap, J.Pickard 2886 (NSW).

Although R.M.Laing (Trans. & Proc. New Zealand Inst. 48: 236, 1916) claimed to differentiate between Pteris brunoniana and P. incisa, his specimens (examined on loan from CHR), which correspond to his descriptions and figures, can be matched by specimens in a range of material from New Zealand and Australia, showing them to be different growth forms of the same species.

gen.
DENNSTAEDTIACEAE
22. HYPOLEPIS

HypolepisBernh.
Neues J. Bot. 1(2): 34(1805)
from the Greek hypo- (under) and lepis (a scale), in allusion to the sori protected beneath a reflexed portion of the margin in these ferns

Type: H. tenuifolia (G.Forst.) Bernh. ex C.Presl

Rhizome hairy, scurfy or glabrous, lacking scales. Fronds distant; stipe stout, continuous with rhizome; lamina 2–5-pinnate, glabrous or hairy, often glandular; veins free; pinnules sessile, rachis grooved above. Sori marginal or submarginal, rounded, discrete, usually indusiate from a ±reflexed marginal flap of the lamina; paraphyses rarely present.

A mainly tropical genus of c. 45 species, with extensions into the warm temperate regions of the Northern and Southern Hemispheres, including South Africa, Australia and New Zealand.

G.Bentham, Filices, Hypolepis, Fl. Austral. 7: 726 (1878); P.J.Brownsey & R.J.Chinnock, New Zealand J. Bot. 22: 43–80 (1984); P.J.Brownsey, Blumea 32: 227–276 (1987); P.J.Brownsey & R.J.Chinnock, J. Adelaide Bot. Gard. 10: 1–30 (1987).

1 Primary rachis and its branches with both glandular and non-glandular hairs, predominantly glandular, viscid when fresh (N.Is.)




2 Hairs on lamina undersurface stoutish, 0.2–1.5 mm long; indusial flap green at base, membranous at apex, tapering, often bearing glandular hairs on margin

1. H. dicksonioides

2: Hairs on lamina undersurface fine, 0.1–1 mm long; indusial flap mostly membranous, broad, sometimes bearing glandular hairs on outer surface

2. H. tenuifolia

1: Primary rachis and its branches with non-glandular hairs only (L.H.Is.)

3. H. elegans



1
Hypolepis
dicksonioides(Endl.) Hook.
Sp. Fil. 2: 61(1852)


Cheilanthes dicksonioides Endl., Prodr. Fl. Norfolk. 15 (1833); Hypolepis endlicherianum C.Presl, Tent. Pterid. 162 (1836), nom. illeg.T: Norfolk Island, F.L.Bauer; holo: W. Named from a presumed similarity of the fronds to those of Dicksonia.

[Polypodium rugulosum auct. non Labill.: S.F.L.Endlicher, op. cit. 7]

[Cheilanthes arborescens auct. non Sw.: S.F.L.Endlicher, op. cit. 15]

[Hypolepis tenuifolia auct. non (G.Forst.) Bernh. ex C.Presl: W.J.Hooker & J.G.Baker, Syn. Fil. 2nd edn, 129 (1874) p.p.; R.M.Laing, Trans. & Proc. New Zealand Inst. 47: 14 (1915); J.S.Turner et al., Conservation Norfolk Is. 30 (1968)]

[Phegopteris punctata auct. non (Thunb.) Mett.: J.H.Maiden, Proc. Linn. Soc. New South Wales 28: 730 (1904)]

[Dryopteris punctata auct. non (Thunb.) C.Chr.: R.M.Laing, Trans. & Proc. New Zealand Inst. 47: 10 (1915)]

[Hypolepis punctata auct. non (Thunb.) Mett.: J.S.Turner et al., Conservation Norfolk Is. 30 (1968)]


Illustrations: P.J.Brownsey & R.J.Chinnock, New Zealand J. Bot. 22: 66 (1984); P.J.Brownsey & R.J.Chinnock, J. Adelaide Bot. Gard. 10: 5, fig. 2C, 23, fig. 11 (1987); P.J.Brownsey & J.C.Smith-Dodsworth, New Zealand Ferns & Allied Pl. 96, fig. 117, 98, fig. 120, t. 22B (1989).

Rhizome apex densely covered with pale brown hairs. Fronds: stipe 30–60 (–100) cm tall, with pale glandular and non-glandular hairs when young; lamina 30–100 cm long or more, almost as wide, bipinnate at apex, becoming 3- or 4-pinnate towards base; rachis and its branches viscid with soft, pale glandular and non-glandular hairs 0.2–1.5 mm long, especially above; hairs on undersurface of lamina stoutish, 0.2–1.5 mm long; primary pinnae ±opposite, 15–50 cm long. Sori marginal, associated with ultimate segments, protected when young by reflexed, ear-like marginal lobes of lamina; lobes 0.3–0.8 mm wide, mostly green at base, membranous at apex, tapering, often with a few marginal, glandular hairs.

Ground Fern, Brake Fern.

Fig. 104A–B.v*****_f*****.jpg

Norfolk Is. Rare. Also known from the Kermadec Is., New Zealand (North Is. and the northernmost parts of South Is.), Samoa, the Society Is. and the Marquesas Is.

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