Asplenium haughtonii
A small scaly spleenwort found only on St Helena, where it grows in crevices of dry cliffs and rocky ridges in the island's arid middle zone. It is critically endangered: in 2012 airport works destroyed its main site in Dry Gut, and about 1,000 plants were rescued to the island's endemic plant nursery. It belongs to the drought-adapted A. cordatum group, whose fronds curl up in dry spells and revive after rain.
Where it grows wild
It grows in rock crevices and on dry cliffs and rocky ridges in the dry middle zone of St Helena. Recorded sites include cliffs under Bennett Point facing High Hill, High Knoll and the ridge between James and Rupert's valleys. Its roots sit in thin pockets of soil in cracks in the volcanic rock, sheltered from the full drying wind.
About 250–600 m, the semi-arid middle zone below the moist central ridge. One old label gives about 300 m (1,000 ft).
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