Pteridoideae
Pteridoideae is one of the five subfamilies of the fern family Pteridaceae. This subfamily contains about 14 genera and around 400 species.
Taxonomy
Phylogeny
The following diagram shows a likely phylogenic relationship between Pteridoideae and the other the Pteridaceae subfamilies.The cladogram below shows one hypothesis for the evolutionary relationships among the genera of the Pteridoideae, based on a maximum likelihood analysis using six plastid markers. The authors of the study identified four major clades. The Pteris and JAPSTT clades are found worldwide; the GAPCC clade is pantropical; and the Actiniopteris+''Onychium'' clade is restricted to the Old World.