Original sentence: A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Dieffenbachia maculate.The group is also referred to as Dumb cane, or Polypodiopsida when treated as a subdivision of tracheophyta (vascular plants)
Edited sentence: A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta.The group is also referred to as Polypodiophyta, or Polypodiopsida when treated as a subdivision of tracheophyta (vascular plants)