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NZ Plants
Asplenium northlandicum - parako, parenako, shore spleenwort
Spleenwort family: Aspleniaceae
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Plants on rock face with fronds angled outward
R Gardner
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Fertile frond
I MacDonald
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Fertile back side, midrib (rachis) with sori on fertile leaflets
I MacDonald
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Frond, side view
I MacDonald
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Fertile frond lower surface, rachis and leaflets with sori
I MacDonald
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Fertile frond front side
I MacDonald
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Leaflets with sori with open sporangia
L Jensen
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Asplenium northlandicum has stout stems that often form thick woody masses above ground. It is a small fern with olive green, very thick and fleshy fronds.
Found on the Kermadec and Three Kings Islands and on the North Island on coastal rocks and scrub.
Formerly known as Asplenium obtusatum subsp. northlandicum
Vegetative characteristics |
Fertile frond and sporangia |
Plant form: stout stems bearing fronds to 400 mm |
Frond appearance: similar to sterile frond |
Frond stalk, midrib: scales ovate to linear |
Sporangium location: on lower frond surface |
Frond shape: ovate |
Sporangium position: close to leaflet margin |
Frond blade: pinnate (divided 1x into leaflets or pinnae) |
Sporangia distribution: in groups (sori) |
Frond surface: glossy, leathery |
Sorus shape: linear |
Leaflets: ovate to oblong, rounded -tipped, lightly- toothed to smooth margins |
Sorus covering: linear covering (indusium) opening toward midrib |