Pflanzenreich Haeckel (1866) - plants Division Euthallophyta Subdivision Euphyceae Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901) Subclass Florideae 1 Series Nemalionales 2 Series Gigartinales F.Schmitz 3 Series Rhodymeniales F.Schmitz 4 Series Cryptonemiales Schmitz (1892)