#family_Pythiaceae__Pythiaceae  fungi having sporangia usually borne successively and singly at the tips of branching sporangiophores
  supertype:  fungus_family  includes lichen families
  member of:  order_Peronosporales
  member:  genus_Pythium  destructive root-parasitic fungi
     member:  pythium  any fungus of the genus Pythium
  member:  genus_Phytophthora__Phytophthora  destructive parasitic fungi causing brown rot in plants
     member:  Phytophthora_citrophthora  causes brown rot gummosis in citrus fruits
     member:  Phytophthora_infestans  fungus causing late blight in solanaceous plants especially tomatoes and potatoes

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