organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Chromista Caval.-Sm. (1981) - chromists
       Phylum Oomycota Arx (1967)
         Class Oomycetes G.Winter (1880) - oomycetes see Class Peronosporea
           Order Leptomitales Kanouse (1927)
             Family Leptolegniellaceae M.W. Dick (1971)
               Genus Aphanodictyon Huneycutt ex M.W. Dick (1971)
               Genus Aphanomycopsis Scherff. (1925)
               Genus Brevilegniella M.W. Dick (1961)
               Genus Leptolegniella Huneycutt (1952)
               Genus Nematophthora Kerry & D.H. Crump (1980)