Whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs. Synonyms: class Psilotatae, Psilopsida, Psilotatae.
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Words linked to "Class Psilopsida" : order Psilotales, division Pteridophyta, Psilotales, Pteridophyta, class |
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