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Meaning of CLASS PSILOPSIDA

WordNet Dictionary
 
 Definition: [n]  whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
 
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 Synonyms: class Psilotatae, Psilopsida, Psilotatae
 
 See Also: class, division Pteridophyta, order Psilotales, Psilotales, Pteridophyta

 

 

 

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