#order_Ophioglossales__Ophioglossales  coextensive with the family Ophioglossaceae
  supertype:  plant_order__plantorder  the order of plants
  member of:  class_Filicopsida
  member:  family_Ophioglossaceae__Ophioglossaceae  a family of succulent ferns of order Ophioglossales; cosmopolitan in distribution
     member:  genus_Ophioglossum__Ophioglossum  the type genus of the fern family Ophioglossaceae
        member:  adder's_tongue_fern__adder's_tongue__adder'stongue  ferns with fertile spikes shaped like a snake's tongue
     member:  genus_Botrychium__Botrychium  grape fern; moonwort
        member:  grape_fern__grapefern  a fern of the genus Botrychium having a fertile frond bearing small grapelike clusters of spore cases
     member:  genus_Helminthostachys__Helminthostachys  1 species: terrestrial fern of southeastern Asia and Australia
        member:  flowering_fern__floweringfern__Helminthostachys_zeylanica  Australasian fern with clusters of sporangia on stems of fertile fronds

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