Genus Asplenium refers to a group of ferns that are widely distributed across the globe. While the term Genus Asplenium is commonly used to refer to these ferns, there are also a number of synonyms that are often used by biologists and botanists. These include Asplenium sect. Euasplenium, Asplenium subg. Ceterach, and Asplenium subg. Phyllitis. Each of these terms refers to different subsets of the Genus Asplenium, with slightly different characteristics and qualities. All in all, these synonyms are an important part of the scientific lexicon, helping researchers to more accurately describe and classify different varieties of ferns within the larger Asplenium family.