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NZ Plants
Blechnum chambersii - nini, reteti
Hard fern family: Blechnaceae
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Plant
L Jensen
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Frond stalk (stipe) with scales
L Jensen
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Stipe with scales
L Jensen
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Fertile (left) and sterile (right) fronds
I MacDonald
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Sterile frond upper surface, midrib (rachis) with leaflets
L Jensen
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Sterile frond upper surface, rachis
L Jensen
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Leaflet upper surface, rachis detail
L Jensen
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Leaflet upper surface
L Jensen
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Rachis, lower surface
L Jensen
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Leaflet margin, lower surface
L Jensen
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Fertile frond
L Jensen
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Fertile frond upper surface, rachis and leaflet
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Fertile leaflets, lower surface
L Jensen
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Blechnum chambersii has a stout, erect stem with dissimilar sterile and fertile fronds (dimorphic).
The sterile fronds have bluntly pointed leaflets that are longest at the middle of the frond.
Found throughout New Zealand in damp places.
Vegetative characteristics |
Fertile frond and sporangia |
|---|---|
Plant form: a short, erect trunk with fronds up to 500 mm long |
Frond appearance: slightly shorter and more narrow than sterile fronds, with very narrow leaflets |
Frond stalk, midrib: scales linear to lanceolate |
Sporangium location: on lower frond surface |
Sterile frond shape: narrow to linear |
Sporangium position: leaflet margin |
Frond blade: pinnate (divided 1 x into leaflets or pinnae) |
Sporangium distribution: in groups (sori) |
Frond surface: leathery |
Sorus shape: in a continuous line either side of midrib |
Leaflets: longest at middle of frond; oblong, slightly serrate margins and blunt to pointed tip; attached along leaflet base (adnate) |
Sorus covering: linear, opening toward midrib |
