Noun family pythiaceae has 1 sense
  1. Pythiaceae, family Pythiaceae - fungi having sporangia usually borne successively and singly at the tips of branching sporangiophores
    --1 is a kind of fungus family
    --1 is a member of Peronosporales, order Peronosporales
    --1 has members: genus Pythium; Phytophthora, genus Phytophthora
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