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NZ Plants
Hypolepis millefolium- thousand-leaved fern
Family: Dennstaedtiaceae
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Plant
L Jensen
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Frond
I MacDonald
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Frond upper surface, midrib (rachis) with leaflelts
I MacDonald
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Frond upper surface, rachis with leaflets
L Jensen
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Rachis hairs
L Jensen
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Rachis hair detail
L Jensen
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Leaflet lower surface with marginal sori
L Jensen
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Marginal flaps over sori with unopened sporangia
L Jensen
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Hypolepis millefolium is distinctive for its broad, finely dissected bright green fronds with numerous bristly hairs. Deciduous in winter.
An endemic fern found at higher elevations on the North Island to sea level on the South island.
Vegetative characteristics |
Fertile frond and sporangia |
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Plant form: creeping rhizome with fronds up to 950 mm in length |
Frond appearance: similar to sterile fronds |
Frond stalk, midrib: bristly hairs |
Sporangium location: lower frond surface |
Frond shape: narow elliptic |
Sporangium position: leaflet margin |
Frond blade: 4-pinnate at base (divided up to 4x into leaflets or pinnae) |
Sporangia distribution: in groups (sori) |
Frond surface: hairs along midrib veins |
Sorus shape: round to oval |
Leaflets: deeply cut; attached along leaflet base (adnate) |
Sorus covering: uncovered or covered with a reflexed marginal flap |
