Vigorous Asplenium X tubalense with long fronds about 30 cm. that stretch searching for light.
However, with patience, sifting through dead spore so, so much as a spore appears completely normal and viable. Through a trap reproductive perhaps apomesiosis (no meiosis by mutation of the gene that encodes) at one of its sporangia, this vigorous ferns spores able to form a viable chromosome combination, whether tetraspores or diplospores, which germinate and by gametophytic apomixis (another mutation that allows growth of a fern from a somatic cell of a gametophyte, bypassing the normal sexual reproduction), get children fill the walls of several terraces of a small area of the Soller Valley. While this may seem like science fiction, the reality is that his father and grandfather, Asplenium azomanes and Asplenium azoricum, were formed by hybridization about 6 million years, were also sterile and allotetraploid hybrids, however, species are now well defined and stable with 100% viable spores. A more recent example, which still produces some aborted spore is the allotetraploid hybrid Asplenium majoricum, which is already a well-defined and stable species and perfectly fertile and successful.