Asplenium resiliens
A small rock fern with dark, almost black stipes and rachises. It is widespread from the southern and eastern USA through Mexico and the Andes to Argentina and Uruguay. It grows on or at the base of limestone and other alkaline rock on cliffs and in sinkholes, and it is an apogamous triploid, so its spores give rise to plants without fertilisation. Give it a limy, gritty mix, moderate light and a cool winter.
Where it grows wild
It grows in crevices and at the foot of limestone cliffs, sinkholes and other alkaline rock, rarely on granite or sandstone and uncommonly in soil. These are shaded to partly sunny rocky sites where the roots are held in thin, calcareous grit. High-altitude plants are stunted and compact.
Literature gives about 100 m in North America up to 3,900 m in Guatemala. The wild records run from 198 to 2,604 m with a median of 450 m, reflecting the dominance of records from the southeastern USA.
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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 Public domain licence, unmodified.