#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
  member of:  genus_Equisetum
  part:  strobilus__cone__strobile  cone-shaped mass of ovule- or spore-bearing scales or bracts

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