Asplenium ruprechtii

It is a close relative of Asplenium rhizophyllum[1] (syn: Camptosorus rhizophyllus[1]) which is found in North America and also goes by the common name of walking fern.

The evergreen, undivided, slightly leathery leaves are triangular and taper to a thin point.

The plant can be found in the shady areas of limestone ledges and in limy forest places.

A global phylogeny of Asplenium published in 2020 divided the genus into eleven clades,[3] which were given informal names pending further taxonomic study.

[5] There is no clear morphological feature that unites the A. cordatum subclade; the sister species of A. ruprechtii is A. rhizophyllum, which shares an undivided leaf blade and a proliferating tip, while the other three species are scaly spleenworts of dry habitats in Africa and the Middle East.