Viridiplantae Cavalier-Smith, 1981 - green plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Chlorophyta Pascher (1914) - green algae
     core chlorophytes
       Class Ulvophyceae K.R. Mattox & K.D. Stewart (1984) - ulvophytes
         Order Cladophorales Haeckel
           .1 Genus Boodlea G. Murray & G.B. De Toni (1889)
           1 Genus Okellya Leliaert & Rueness (2009)
           2 Aegagropila clade
           3 Cladophora clade
           4 Siphonocladus clade