Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Euphyceae
       Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)
         Subclass Florideae
           Series Nemalionales
             1 Family Thoreaceae
             2 Family Lemaneaceae
             3 Family Helminthocladiaceae see Family Liagoraceae Kützing (1843)
             4 Family Chaetangiaceae
             5 Family Gelidiaceae Kützing (1843)