living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Eumycota see Kingdom Eumycota
           Subdivision Mastigomycotina
             Class Oomycetes G.Winter (1880) - oomycetes see Class Peronosporea
               Order Peronosporales
                 Family Pythiaceae
                   Genus Phytophthora de Bary (1876)
                   Genus Pythium Pringsh. (1858), nom. cons.