Cystopteridaceae

Cystopteridaceae is a family of ferns distributed in temperate and subtropical regions, typically inhabiting shaded and moist environments such as forests and rocky habitats. Members of this family produce secondary metabolites including flavonoids, phenolic acids, and terpenoid derivatives, which contribute to their stress tolerance and ecological adaptation. In biomedical research, Cystopteridaceae is of interest for its antioxidant and cytoprotective properties, although it remains relatively underexplored compared to angiosperm-derived systems. Its phylogenetic position within ferns makes it valuable for studying the evolution of vascular plant metabolites and for identifying novel chemical scaffolds distinct from flowering plants. As such, it represents a promising but niche resource for natural product discovery.