Synonyms for Psilotatae (same or very similar meaning)
WordNet sense 1 (whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs):
Psilopsida, class Psilopsida, class Psilotatae
From the ODE community, based on WordNet
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