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
         1 Oltmannsiellopsidales T. Nakayama, S. Watanabe & I. Inouye (1996)
         2 Ulvales-Ulotrichales
         3.1 Ignatius clade
         3.2.1 Trentepohliales Chadef. ex R.H. Thompson & D.E. Wujek (1997)
         3.2.2.1 Order Bryopsidales J.H.Schaffn. (1922)
         3.2.2.2 Order Dasycladales Pascher (1931)
         3.2.3.1 Genus Blastophysa J. Reinke (1889)
         3.2.3.2 Order Cladophorales Haeckel