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
         Ulvales-Ulotrichales
           Order Ulotrichales Borzi
             1 Genus Acrosiphonia J.Agardh (1846)
             2 Genus Monostroma G. Thuret (1854)
             3 Genus Ulothrix F.T. Kützing (1833)
             4 Genus Pseudendoclonium Wille (1901)
             5 Genus Gloeotilopsis Iyengar & Philipose (1956)
             6 Genus Urospora Aresch. (1866), nom. cons.