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Hymenophyllum bivalve (Forst.) Sw.

Species

Angiosperms > Zingiberales > Zingiberaceae > Hymenophylloideae > Hymenophyllum

Characteristics

Rhizome sparsely hairy; hairs red-brown, appressed. Fronds pendulous in epiphytic plants, otherwise erect, 4–35 cm long. Stipes well-spaced on the rhizome, not winged, 1.5–17 cm long, sparsely hairy towards the apex and the base. Lamina deeply 3-pinnatifid to 5-pinnatifid, broadly triangular to broadly ovate, 2.5–14 (–21) cm long, 2.5–7 (–16.5) cm wide; apex usually deflexed, acuminate; primary pinnae often upcurved; rachis winged with entire or very shallowly toothed margins. Ultimate segments linear, 0.3–1.5 mm wide, obtuse, sharply toothed, ± glabrous. Sori numerous, mainly towards the apex of the frond; involucre round to ovoid, bilabiate, divided almost to the base, 0.8–2.0 mm long, 0.5–1.5 mm wide; base cuneate, only slightly immersed; margins entire; receptacle included or slightly exserted.
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Rhizome rather stout, with or without hairs; stipites rather distant. Stipes rather stout, 5-15 cm. long, not winged. Rhachis narrowly winged above, rarely throughout. Lamina 10-20 cm. long, broad-ovate to deltoid-triangular, us. acuminate, bright green, 2-4-pinnatifid; final segs linear, obtuse, distinctly to rather obscurely toothed. Sori not confined to lateral segs, slightly immersed; indusium 1-2 mm. long, ovate to suborbicular, 2-valved nearly to base, valves entire. Receptacle distinctly exserted to included.
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Growth form herb
Growth support free-standing
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Root system rhizome
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Environment

Terrestrial, lithophytic or epiphytic on rainforest trees and fern trunks, particularly Nothofagus moorei and Dicksonia antarctica, in temperate and subtropical rainforest.
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Hardiness (USDA) 7-12

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Cultivation

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Images

Hymenophyllum bivalve unspecified picture

Distribution

Hymenophyllum bivalve world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:17121860-1
WFO ID wfo-0001286822
COL ID 3NK8H
BDTFX ID -
INPN ID 454607
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Meringium bivalve Hymenophyllum spathulatum Sphaerocionium bivalve Trichomanes pacificum Hymenophyllum pyriforme Hymenophyllum bivalve Trichomanes bivalve
WorldFloraDB 2024