Noun genus arethusa has 1 sense
  1. genus Arethusa - genus of bog orchids of North America and Japan
    --1 is a kind of
    monocot genus, liliopsid genus
    --1 is a member of Orchidaceae, family Orchidaceae, orchid family
    --1 has members:
     arethusa; bog rose, wild pink, dragon's mouth, Arethusa bulbosa
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