Pteridophyta

Etymology
.

Usage notes
Thought to be paraphyletic.

The membership of classes and Polypodiopsida is disputed, in particular as to which class the leptosporangiate ferns should belong. (See )

Hyponyms

 * (horsetails and scouring rushes), Gleicheniopsida (= Polypodiopsida), (eusporangiate tree ferns), Osmundopsida (= Polypodiopsida), Polypodiopsida,, Polypodiopsida,  (whisk ferns and adder's-tongue)