#family_Psilotaceae__Psilotaceae  small family of lower ferns having nearly naked stems and minute scalelike leaves
  supertype:  fern_family  families of ferns and fern allies
  member:  genus_Psilotum
  member of:  order_Psilotales__Psilotales  lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots
     member of:  class_Psilopsida__Psilopsida__Psilotatae__class_Psilotatae  whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
        member of:  division_Pteridophyta__Pteridophyta  containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
           member of:  kingdom_Plantae__Plantae__plant_kingdom__plantkingdom  taxonomic kingdom comprising all living or extinct plants

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