Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Euphyceae
       Class Chlorophyceae Wille (1884) - chlorophytes
         Series Siphoneae
           1 Family Botrydiaceae
           2 Family Phyllosiphonaceae
           3 Family Bryopsidaceae Bory
           4 Family Derbesiaceae Hauck
           5 Family Vaucheriaceae Dumort. (1822)
           6 Family Caulerpaceae Kütz.
           7 Family Codiaceae Kütz. (1843)
           8 Family Valoniaceae Kützing
           9 Family Dasycladaceae Kützing (1843)