Polypodiopsida

group of plants, usually a class Polypodiopsida (Polypodiopsida) is a class of organisms united by key anatomical and physiological traits. It contains 10 orders with 261 known species. Key order groups include Cyatheales, Equisetales, Hymenophyllales, Marattiales, Ophioglossales, and Osmundales. Among its members, 45 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Tracheophyta (Tracheophyta).