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NZ Plants
Lastreopsis microsora
Family: Dryopteridaceae
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Frond
I MacDonald
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Frond stalk with hairs and scales
L Jensen
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Frond upper surface, midrib (rachis) with leaflets
I MacDonald
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Frond upper surface, rachis with leaflets
L Jensen
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Rachis with hairs
L Jensen
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Rachis with long hairs and short glandular hairs
L Jensen
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Leaflet upper surface with long and short hairs
L Jensen
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Frond lower surface, rachis with hairs and scales
L Jensen
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Fertile frond lower surface, leaflets with immature sori
L Jensen
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Young leaflet with immature sori covered by indusium
L Jensen
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Fertile frond lower surface, leaflets with mature sori
L Jensen
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Mature indusium covering shrivels to expose sporangia underneath
L Jensen
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Lastreopsis microsora is a terrestrial fern with creeping stems (rhizomes) bearing pale green, 5-angled fronds. Both the frond stalk (stipe), midrib (rachis) and leaflet veins are sparsely covered with flat, brown scales, abundant soft whitish hairs and short glandular hairs.
Found in damp lowland or coastal forest throughout the North Island and in coastal regions of the South Island.
Vegetative characteristics |
Fertile frond and sporangia |
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Plant form: creeping stems with fronds up to 50 cm in length |
Frond appearance: similar to sterile frond |
Frond stalk, midrib: sparse flat brown scales; numerous soft, whitish hairs |
Sporangium location: on lower frond surface |
Frond shape: oval |
Sporangium position: to either side of vein |
Frond blade: 3-4-pinnate (divided 3-4x into leaflets or pinnae) |
Sporangia distribution: in groups (sori) |
Frond surface: whitish hairs on veins |
Sorus shape: circular |
Leaflets: stalked, oblong, toothed, pointed at tip |
Sorus covering: kidney-shaped |
