#whisk_fern__whiskfern  chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots
  supertype:  fern_ally  pteridophytes of other classes than Filicopsida
  subtype:  skeleton_fork_fern  pantropical epiphytic or terrestrial whisk fern with usually dull yellow branches and minute leaves; America; Japan; Australia
  member of:  genus_Psilotum__Psilotum  type genus of the Psilotaceae
     member of:  family_Psilotaceae__Psilotaceae  small family of lower ferns having nearly naked stems and minute scalelike leaves
        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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