Noun genus ophioglossum has 1 sense
  1. Ophioglossum, genus Ophioglossum - the type genus of the fern family Ophioglossaceae
    --1 is a kind of fern genus
    --1 is a member of Ophioglossaceae, family Ophioglossaceae
    --1 has members: adder's tongue, adder's tongue fern
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