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(vascular plants)
***Class Lycopodiopsida, clubmosses and related plants (fern-allies)
***Class Sphenopsida or Equisetopsida, horsetails and scouring-rushes (fern-allies)
***Class Psilotopsida, whisk ferns (fern-allies)
***Class Filices or Pteropsida, true ferns (including leptosporangiates,

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