[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Rhodophycota
       Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)
         Order Porphyridiales Kylin ex Skuja (1939)
           Family Porphyridiaceae Skuja
             1 Genus Chroothece Hansgirg, in Wittrock & Nordst. (1884)
             2 Genus Porphyridium Nägeli (1849), nom. cons.
             3 Genus Rhodella L.V.Evans (1970)
             4 Genus Rhodosorus Geitler (1930)
             5 Genus Rhodospora Geitler (1927)