#christella  any of several tropical ferns of the genus Christella having thin brittle fronds
  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_Christella  medium to large terrestrial ferns of tropical forests of Old World to Americas
     member of:  family_Thelypteridaceae__Thelypteridaceae  genera Thelypteris; Phegopteris; others
        member of:  class_Filicopsida__Filicopsida__Filicinae__class_Filicinae  ferns
           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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