Asplenium obtusatum
New Zealand's shore spleenwort is a tough, fleshy-fronded coastal fern of sea cliffs, rocks and seabird colonies, from the southern North Island to the subantarctic islands. It forms clumps up to 1 m across from a bulky, woody rhizome. It suits cool, bright, airy conditions and grows easily but slowly.
Where it grows wild
In the north of its range it grows on exposed sea cliffs in salt spray. Further south it also grows in coastal vegetation, often in seabird colonies, where the soil is enriched by guano.
It is a coastal plant, found just above the shoreline. The few records with an elevation are 10–20 m.
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 4.0 licence, unmodified.