Asplenium majoricum is a tiny fern endemic to Mallorca (Serra de Tramuntana), and some locations in Valencia and south of Catalonia, Spain.
This allotetraploid hybrid (2n = 144 chromosomes) is the result of crossbreeding between the diploid ferns Asplenium fontanum subsp.
The sori are longer than they are wide, with a side indusie, and are located near the central line of the pinnae.
This small fern lives among the stones of the walls of the terraces and in the crevices of limestone rocks oriented North and Northwest.
With the first rains of autumn, the fronds will rehydrate in less than 24 hours and turn green as if nothing had happened.