#horsetail  perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in northern hemisphere; some in Africa and South America
  supertype:  #fern_ally  pteridophytes of other classes than Filicopsida
  subtype:  #common_horsetail  #swamp_horsetail  #scouring_rush  #marsh_horsetail  #wood_horsetail  #variegated_horsetail
  part:  #strobilus
  member of:  #genus_Equisetum__Equisetum  horsetails; coextensive with the family Equisetaceae
     member of:  #family_Equisetaceae__Equisetaceae__horsetail_family__horsetailfamily  sole surviving family of the Equisetales: fern allies
        member of:  #order_Equisetales__Equisetales  lower tracheophytes in existence since the Devonian
           member of:  #class_Sphenopsida__Sphenopsida__Equisetatae__class_Equisetatae  horsetails and related forms
              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

No statement uses or specializes #horsetail; click here to add one.