#family_Pteridaceae__Pteridaceae  one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided
  member:  genus_Acrostichum  genus_Actiniopteris  genus_Adiantum  genus_Anogramma  genus_Cheilanthes  genus_Coniogramme  genus_Cryptogramma  genus_Doryopteris  genus_Jamesonia  genus_Onychium  genus_Pellaea  genus_Pityrogramma  genus_Pteris
  member of:  order_Filicales
  supertype:  fern_family  families of ferns and fern allies
     supertype:  family  (biology) a taxonomic group containing one or more genera; "sharks belong to the fish family"
        supertype:  taxonomic_group__taxonomicgroup__taxon  animal or plant group having natural relations
           supertype:  biological_group  a group of plants or animals
              supertype:  group__grouping  any number of entities (members) considered as a unit
                 supertype:  collection  something gathering separated things (entities/situations)
                    supertype:  divisible_entity__divisibleentity  many classifications under this category are application-dependant
                       supertype:  entity  something that can be "involved" in a situation
                          supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                       supertype:  divisible_thing__divisiblething
                          supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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