Pflanzenreich Haeckel (1866) - plants Division Euthallophyta Subdivision Euphyceae Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901) Subclass Florideae Series Gigartinales F.Schmitz Family Rhodophyllidaceae see Family Cystocloniaceae Kützing (1843)