Hymenophyllum flabellatum Labill

Shiny Filmy-fern

Nov. Holl. Pl. 2: 101 (1807) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Rhizome creeping, slender and wiry, covered with yellow-brown hairs when young. Fronds usually distant, often pendent, 5–25 cm long. Stipe with tuft of hairs at base, slender, not winged. Rachis slender, winged in upper part, sometimes with scattered hairs. Lamina 2–3-pinnate, ovate to linear-oblong, pale yellow-green, shiny; pinnae rhomboidal to fan-shaped; ultimate segments linear, terminal segment often elongate; margin entire; apex rounded or notched. Sori numerous, terminal on short lateral pinnae segments, immersed in lamina; indusium deeply 2-lipped, usually slightly wider than segment, oval, apical margins entire; receptacle short.

CVU, EGL, EGU, GipP, GGr, HFE, HNF, HSF, OtP, OtR, Strz, VAlp, VVP, WaP, WPro. Also Qld, NSW, Tas. (including Cape Barren Is. and King Is.). New Zealand, Samoa, Tahiti. Widespread in southern half of State, in wet forests on tree-ferns, trees or fallen logs. It often grows with Polyphlebium venosum.

Extremely variable in habit-plants growing in brighter situations commonly have relatively short, crowded and overlapping pinnae, but in deep shade plants may form a delicate curtain of long, pendulous fronds. A variant of H. flabellatum typically growing on Cyathea australis is stunted and has overlapping pinnae. In common with H. rarum, the indusium is mostly narrower than the subtending segment, longer than wide and often with a V-shaped lower edge. However, the colour, overall branching pattern of the frond and the tuft of hairs on the rhizome readily distinguish this variant from H. rarum.

Source: Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.
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Distribution map

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Hymenophyllum flabellatum in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Hymenophyllum flabellatum in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Central Victorian Uplands present native
Greater Grampians present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Otway Ranges present native
Strzelecki Ranges present native
Highlands-Far East present native
Victorian Alps present native

State distribution

Distribution map
State
Queensland
New South Wales
Victoria
Tasmania