Subdivision Taxophytina can be defined as a group of ferns that possess chromosome numbers of 2n=58. Synonyms for this subdivision include Class Filicopsida, Division Polypodiophyta, and Division Monilophyta. While these terms may differ in their classification systems and hierarchy, they all refer to the same group of ferns with similar characteristics and genetic makeup. Understanding the various synonyms for Subdivision Taxophytina can help facilitate communication between botanists and researchers in the field of fern taxonomy and evolution. Regardless of the terminology used, the classification and study of ferns remain essential to our understanding of plant diversity and evolution.