Parkerioideae

Parkerioideae, synonym Ceratopteridoideae, is one of the five subfamilies in the fern family Pteridaceae. It includes only the two genera Acrostichum and Ceratopteris.^[1][2] The following diagram shows a likely phylogenic relationship between the two Parkerioideae genera and the other Pteridaceae subfamilies.^[3]

Pteridaceae	Cryptogrammoideae Ceratopteridoideae Acrostichum Ceratopteris Pteridoideae Cheilanthoideae Vittarioideae

Parkerioideae
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Polypodiales
Family:	Pteridaceae
Subfamily:	Parkerioideae Burnett
Genera[1]
Acrostichum Ceratopteris
Synonyms
Parkeriaceae Hook. Ceratopteridaceae Underw. Ceratopteridoideae R.M.Tryon