WordNet: Psilopsida, Psilotatae, class Psilopsida, class Psilotatae

Sanatista
whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs



Psilopsida


Psilotatae


class Psilopsida


class Psilotatae