Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Euphyceae
       Class Chlorophyceae Wille (1884) - chlorophytes
         Series Confervales
           01 Family Ulvaceae J.V.Lamour. ex Dumort.
           02 Family Ulothrichaceae
           03 Family Chaetophoraceae Grev.
           04 Family Mycoideaceae
           05 Family Cylindrocapsaceae Wille
           06 Family Oedogoniaceae de Bary ex Hirn
           07 Family Coleochaetaceae
           08 Family Cladophoraceae Wille (1884), nom. cons.
           09 Family Gomontiaceae De Toni
           10 Family Sphaeropleaceae Kützing