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] Domain Bacteria Woese et al. 2024 Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024 Phylum Cyanobacteriota Oren et al. 2022 Class Chroococcophyceaeᵀ Hollerbach et al. 1953 Order Chroococcales corrig. Ardissone 1887 Family Microcystaceae Elenkin 1933, sedis mutabilis 01 Genus †Palaeomicrocystis Korde 1955 02 Genus †Rhyniococcus Edwards and Lyon 1983 03 Genus †Uranovia Korde 1958 04 Genus Altericista Averina et al. 2021 05 Genus Anacystis Meneghini 1837 06 Genus Aphanocapsa Nägeli 1849 07 Genus Aphanothece Nägeli 1849 nom. cons. 08 Genus Aplococcus Roze 1896 09 Genus Asterocapsa Chu 1952 10 Genus Bichatia Turpin 1828 11 Genus Cagniardia Trevisan 1848 12 Genus Chalicogloea Roldán et al. 2013 13 Genus Coccopedia Troitzkaja 1922 14 Genus Coelomoron Buell 1938 15 Genus Coelosphaeriopsis Lemmermann 1899 16 Genus Coelosphaerium Nägeli 1849 17 Genus Crocosphaera Zehr et al. 2019 18 Genus Cyanoaggregatum Werner et al. 2008 19 Genus Cyanocatena Hindák 1975 20 Genus Cyanocomperia Hindák 2001 21 Genus Cyanodorina Chen et al. 2023 22 Genus Cyanogranis Hindák 1982 23 Genus Cyanonephron Hickel 1985 24 Genus Cyanostylon Geitler 1928 25 Genus Cyanotetras Hindák 1988 26 Genus Dzensia Woronichin 1929 27 Genus Eucapsis Clements and Shantz 1909 28 Genus Eucapsopsis de Oliveira et al. 2024 29 Genus Globuloella Korde 1958 30 Genus Gloeothece Nägeli 1849 nom. cons. 31 Genus Gonidium Ehrenberg ex Meneghini 1840 32 Genus Hormothece Jao 1944 33 Genus Mantellum Dangeard 1949 35 Genus Merismopedia Meyen 1839 36 Genus Microcystisᵀ Kützing ex Lemmermann 1907 nom. cons. 36.0 Genus "Microhaloa" (sic) Kützing 1843 nom. inval. 37 Genus Pannus Hickel 1991 38 Genus Pilgeria Schmidle 1901 39 Genus Planktocyanocapsa Hindák 2002 40 Genus Prochloron Lewin ex Hoffmann and Greuter 1993 [monotypic] 41 Genus Pseudoholopedia (Ryppowa 1925) Elenkin 1935 42 Genus Pseudoncobyrsa Geitler 1925 43 Genus Radiocystis Skuja 1948 44 Genus Rippkaea Johansen and Mareš 2019 45 Genus Rubidibacter Choi et al. 2008 [monotypic] 46 Genus Siphonosphaera Hindák 1988 47 Genus Snowella Elenkin 1938 48 Genus Sorospora Hassall 1845 49 Genus Spelaeotes corrig. Panou and Gkelis 2022 50 Genus Sphaerocavum Azevedo and Sant'Anna 2003 51 Genus Sphinctosiphon West 1907 52 Genus Synechocystis Sauvageau 1893 53 Genus Thaumaleocystis Trevisan 1848 54 Genus Woronichinia Elenkin 1933 55 Genus Zehria Johansen and Mareš 2019