#hard_fern  any of several ferns of the genus Blechnum
  supertype:  fern  any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores
  member of:  genus_Blechnum
  subtype:  deer_fern__Blechnum_spicant  fern with erect fronds of Europe and western North America; often cultivated for deer browse

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