Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Plantae Haeckel (1866) - plants
Clade Rhodaria Cavalier-Smith 2021
Subkingdom Rhodoplantae G.W.Saunders & Hommers. (2004) [monotypic]
Phylum Rhodophyta Wettst. (1901) - red algae
Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004)
Class Florideophyceae Cronquist (1960)
Subclass Rhodymeniophycidae G.W.Saunders & Hommers. (2004)
Order Gigartinales F.Schmitz
Family Catenellopsidaceae P.A. Robins
Family Caulacanthaceae Kützing (1843)
Family Choreocolacaceae
Family Corynocystaceae
Family Dumontiaceae Bory (1828)
Family Endocladiaceae Kylin
Family Gainiaceae
Family Gloiosiphoniaceae
Family Haemeschariaceae R.T. Wilce & Maggs
Family Kallymeniaceae (J.Agardh) Kylin (1928)
Family Schmitziellaceae
Family Tichocarpaceae
Family Wurdemanniaceae [monotypic]
01 ?Family Acrosymphytaceae S.C. Lindstrom
02 ?Family Calosiphoniaceae Kylin (1932)
03 Family Cruoriaceae (J.Agardh) Kylin (1928)
04.1 Family Gymnophlaeaceae
06 Family Petrocelidaceae
07 Family Phyllophoraceae Nägeli (1847)
08 Family Gigartinaceaeᵀ Kützing (1843)
09 Family Chondriellaceae Levring (1941)
10 Family Polyidaceae Kylin (1956), nom. cons.
11 Family Nizymeniaceae Womersley (1971)
12 Family Rhizophyllidaceae Schmitz (1889)
13 Family Acrotylaceae Schmitz (1892)
15 Family Sphaerococcaceae Schmitz & Hauptfleisch
16 Family Phacelocarpaceae Searles (1968)
18 Family Furcellariaceae Kylin (1932)
19.1 Family Solieriaceae Agardh (1876)
19.2 Family Areschougiaceae J.Agardh (1876)
20 Family Hypneaceae J.Agardh (1851)
21 Family Rissoellaceae Kylin [monotypic]
22 Family Rhabdoniaceae
23 Family Cubiculosporaceae Kraft (1973) [monotypic]
24 Family Cystocloniaceae Kützing (1843)
25 Family Mychodeaceae Kylin (1932)
26 Family Mychodeophyllaceae Kraft (1978)
27 Family Dicranemataceae Kylin (1932)
28 Family Blinksiaceae Hollenberg & Abbott (1968) [monotypic]