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 1 Family Acrotylaceae Schmitz (1892) 2 Family Gigartinaceae Kützing (1843) 3 Family Rhodophyllidaceae see Family Cystocloniaceae Kützing (1843)