Name: Microcystis Kützing ex Lemmermann 1907

Category: Genus

Proposed as: gen. nov.

Etymology: Gr. masc. adj. mikros, klein (may keep -o); Gr. fem. n. kystis, Blase; N.L. fem. n. Microcystis

Gender: feminine (stem: Microcyst-)

Type species: Microcystis aeruginosa (Kützing 1833) Lemmermann 1907

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Lemmermann E. Algen I (Schizophyceen, Flagellaten, Peridineen). In: Anonymous NN (eds), Kryptogamenflora der Mark Brandenburg und angrenzender Gebiete herausgegeben von dem Botanischen Verein der Provinz Brandenburg. Dritter Band, Verlag von Gebrüder Borntraeger, Leipzig, 1907, p. 1-304.

Nomenclatural status: validly published under the ICN (Botanical Code), conserved name

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Micraloa Biasoletto 1832	heterotypic synonym, validly published under the ICN (Botanical Code)
    Polycystis Kützing 1849	homotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Diplocystis Trevisan 1848	homotypic synonym, validly published under the ICN (Botanical Code), rejected name
    Clathrocystis Henfrey 1856	homotypic synonym, validly published under the ICN (Botanical Code), rejected name

• Notes:
  • 🥇 Nomenclatural type of the family Microcystaceae Elenkin 1933. Publication: Elenkin AA. O sistematicheskom podrazdenii poryadka Chroococcales Geitler (1925). Trudy Botanicheskogo Instituta Akademii Nauk SSSR, Ser. 2, Sporovye Rasteniya 1933; 1:17-21.
  • 🧕 Boone et al. (2001) assigned this genus to the class "Cyanobacteria". Publication: Garrity GM, Holt JG. The Road Map to the Manual. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 119-166.
  • 🧕 Geitler (1925) assigned this genus to the family Chroococcaceae Rabenhorst 1863. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • 🚋 The type species of this genus has alternatively been placed in the genus Clathrocystis Henfrey 1856. Publication: Henfrey A. Notes on some fresh-water confervoid algae, new to Britain. Transactions of the Microscopical Society of London, New Series 1856; 4:49-54.
  • 🚋 The type species of this genus has alternatively been placed in the genus Diplocystis Trevisan 1848. Publication: Trevisan VBA. Saggio di una monografia delle Alghe Coccotalle. Tipi Del Seminario, Padova, 1848.
  • 🚋 The type species of this genus has alternatively been placed in the genus Polycystis Kützing 1849. Publication: Kützing FT. Species algarum. F.A. Brockhaus, Lipsiae, 1849.
  • 🚋 The type species of this genus has alternatively been placed in the genus Micraloa Biasoletto 1832. Publication: Kützing FT. Beitrag zur Kenntniss über die Entstehung und Metamorphose der niedern vegetabilischen Organismen, nebst einer systematischen Zusammenstellung der hieher gehörigen niedern Algenformen. Linnaea 1833; 8:335-384.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Aficrocystis"; "Aicrocystis"; "Alicrocyslis"; "Alicrocystis"; "Blicrocyslis"; "Icmcystis"; "Iicrocyslis"; "Iicrocystis"; "Iierocyslis"; "Illicrocystis"; "Jicrocystis"; "Jlicrocystis"; "Mcrocystis"; "Micerocystis"; "Micmcystis"; "Micorcystis"; "Micracystis"; "Micracyszis"; "Micrccystis"; "Micrecystis"; "Microcgstis"; "Microcgystis"; "Microcjslis"; "Microcpstis"; "Microcptis"; "Microcustis"; "Microcvstis"; "Microcyatis"; "Microcyctis"; "Microcygtis"; "Microcysfis"; "Microcysiis"; "Microcysitis"; "Microcyslis"; "Microcysris"; "Microcystidi"; "Microcystidis"; "Microcysus"; "Microcytis"; "Microcytsis"; "Microcyvis"; "Microcyxtis"; "Microeystis"; "Microgmlis"; "Microgwlis"; "Microgystis"; "Microoyslis"; "Microoystis"; "Microqulis"; "Microqystis"; "Microscystis"; "Microtjyslis"; "Microwstis"; "Microystis"; "Microzystis"; "Micrwystis"; "Micvocystis"; "Miemcystis"; "Mierecystis"; "Miereeystis"; "Mierocystis"; "Mieroeystis"; "Mierooystia"; "Mierveystis"; "Miorerystis"; "Miorocystis"; "Miorooystis"; "Mirocystis"; "Mirrocyslis"; "Mirrocystis"; "Misrocystis"; "Mlcrocyslis"; "Mtcrocyitis"; "Mycrocystis"; "Wicrocystis"; "Wierocystis".
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of Rhizobia and Agrobacteria, minutes of the annual meeting by videoconference, 5 July 2021, followed by online discussion until 31 December 2021. Int J Syst Evol Microbiol 2022; 72:5453.
  • 🎰 The BRCs most frequently used for deposits in this group are: NIES: 3.
  • 🧍 According to Komarek and Golubic (1990) originally assigned to Cyanobacteria but probably green alga (Chlorophyceae). Publication: Komarek J, Golubic S. Guide to the Nomenclature and formal taxonomic treatment of oxyphototroph prokaryotes (Cyanoprokaryotes). Unknown Publisher, Unknown City, 1990.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "MICS" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 71
Number of child taxa with a validly published name, including synonyms: 97
Total number of child taxa: 103

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Microcystis aeruginosa (Kützing 1833) Otsuka et al. 2001	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis aeruginosa (Kützing 1833) Lemmermann 1907	validly published under the ICN (Botanical Code), conserved name	correct name
    Microcystis aeruginosa (Kützing 1833) Kützing 1849	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis amethystina (Filarszky 1900) Forti 1907	validly published under the ICN (Botanical Code)	correct name
    Microcystis angulata Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis anodontae (Hansgirg 1890) Elenkin 1936	validly published under the ICN (Botanical Code)	synonym
    Microcystis aphanothecoides Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis argentea Schiller 1954	validly published under the ICN (Botanical Code)	correct name
    Microcystis bengalensis Banerji 1936	validly published under the ICN (Botanical Code)	correct name
    Microcystis biformis (Braun 1879) Bourrelly 1970	validly published under the ICN (Botanical Code)	correct name
    Microcystis botrys Teiling 1942	validly published under the ICN (Botanical Code)	correct name
    "Microcystis brasiliensis" (Azevedo and Sant'Anna 2003) Rigonato et al. 2018	not validly published	synonym (and no standing)
    "Microcystis brunnea" (Nägeli 1849) Stein and Borden 1979	not validly published	preferred name (not correct name)
    Microcystis calciphila Schwabe 1947	validly published under the ICN (Botanical Code)	correct name
    Microcystis chroococcoidea West and West 1911	validly published under the ICN (Botanical Code)	correct name
    Microcystis comperei Komárek 1984	validly published under the ICN (Botanical Code)	correct name
    Microcystis complanata Skuja 1964	validly published under the ICN (Botanical Code)	correct name
    Microcystis concharum (Hansgirg 1890) Silva 1996	validly published under the ICN (Botanical Code)	correct name
    Microcystis delicatissima (West and West 1912) Starmach 1966	validly published under the ICN (Botanical Code)	synonym
    "Microcystis delicatissima" (West and West 1912) Stein 1976	not validly published	synonym (and no standing)
    Microcystis densa Schiller 1956	validly published under the ICN (Botanical Code), illegitimate name	in need of a replacement
    Microcystis dimidiata (Kützing 1834) Silva 1996	validly published under the ICN (Botanical Code)	correct name
    "Microcystis dimorpha" Joosten 2006	not validly published	preferred name (not correct name)
    Microcystis elabens (Brébisson 1843) Kützing 1846	validly published under the ICN (Botanical Code)	correct name
    Microcystis elabentioides Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis elachista (West and West 1894) Compère 1967	validly published under the ICN (Botanical Code)	synonym
    Microcystis elongata Desikachary 1959	validly published under the ICN (Botanical Code)	correct name
    Microcystis exigua Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis fernandoi (Komárek and Komárková-Legnerová 1993) Lv et al. 2022	validly published under the ICN (Botanical Code)	correct name
    Microcystis ferruginea Wawrik 1963	validly published under the ICN (Botanical Code)	synonym
    Microcystis firma (Kützing 1846) Schmidle 1903	validly published under the ICN (Botanical Code)	correct name
    Microcystis floccosa Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis flosaquae (Wittrock et al. 1879) Kirchner 1898	validly published under the ICN (Botanical Code)	correct name
    Microcystis fusca Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis fuscolutea (Hansgirg 1888) Forti 1907	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis fuscolutea (Hansgirg 1888) Migula 1905	validly published under the ICN (Botanical Code)	correct name
    Microcystis glauca (Wolle 1877) Drouet and Daily 1939	validly published under the ICN (Botanical Code)	correct name
    Microcystis globosa Zalessky 1926	validly published under the ICN (Botanical Code)	correct name
    Microcystis grevillei (Hassall 1833) Elenkin 1936	validly published under the ICN (Botanical Code)	correct name
    Microcystis halophila Martens and Pankow 1972	validly published under the ICN (Botanical Code)	correct name
    Microcystis hansgirgiana Hollerbach 1936	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis holsatica (Lemmermann 1903) Lemmermann 1907	validly published under the ICN (Botanical Code)	correct name
    Microcystis ichthyoblabe (Kunze 1823) Kützing 1843	validly published under the ICN (Botanical Code)	correct name
    Microcystis incerta (Lemmermann 1899) Lemmermann 1903	validly published under the ICN (Botanical Code)	synonym
    Microcystis lamelliformis Holsinger 1955	validly published under the ICN (Botanical Code)	correct name
    Microcystis litoralis (Hansgirg 1892) Aboal 1988	validly published under the ICN (Botanical Code), illegitimate name, later homonym	synonym
    Microcystis litoralis (Hansgirg 1890) Forti 1907	validly published under the ICN (Botanical Code)	correct name
    Microcystis livida Meneghini 1842	validly published under the ICN (Botanical Code)	correct name
    Microcystis lutescens Schiller 1954	validly published under the ICN (Botanical Code)	correct name
    Microcystis marginata (Meneghini 1837) Kützing 1846	validly published under the ICN (Botanical Code)	synonym
    Microcystis marina (Hansgirg 1890) Silva 1996	validly published under the ICN (Botanical Code)	correct name
    Microcystis maxima Bernard 1908	validly published under the ICN (Botanical Code)	correct name
    Microcystis merismopedioides Fritsch 1912	validly published under the ICN (Botanical Code)	correct name
    Microcystis migulae De Toni f. 1939	validly published under the ICN (Botanical Code)	correct name
    Microcystis minima Bernard 1908	validly published under the ICN (Botanical Code)	synonym
    Microcystis minuta Kylin 1937	validly published under the ICN (Botanical Code)	correct name
    Microcystis minutissima West 1912	validly published under the ICN (Botanical Code)	synonym
    Microcystis montigena Hoffmann 1986	validly published under the ICN (Botanical Code)	correct name
    Microcystis muscicola (Meneghini 1842) Elenkin 1936	validly published under the ICN (Botanical Code)	synonym
    Microcystis novacekii (Komárek 1958) Compère 1974	validly published under the ICN (Botanical Code)	correct name
    Microcystis ochracea (Brand 1898) Lemmermann 1907	validly published under the ICN (Botanical Code)	correct name
    Microcystis ochracea (Brand 1898) Forti 1907	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis orae Kossinskaja 1948	validly published under the ICN (Botanical Code)	synonym
    Microcystis orissica West 1911	validly published under the ICN (Botanical Code)	correct name
    Microcystis ovalis Hollenberg 1939	validly published under the ICN (Botanical Code)	correct name
    Microcystis packardii (Farlow ex Forti 1907) Tilden 1910	validly published under the ICN (Botanical Code)	correct name
    Microcystis paludosa (Rabenhorst 1865) Forti 1907	validly published under the ICN (Botanical Code)	correct name
    Microcystis panniformis Komárek et al. 2002	validly published under the ICN (Botanical Code)	correct name
    Microcystis parasitica Kützing 1846	validly published under the ICN (Botanical Code)	correct name
    Microcystis parietina (Nägeli 1849) Elenkin 1936	validly published under the ICN (Botanical Code)	synonym
    "Microcystis paroliniana" Meneghini 1843	not validly published	preferred name (not correct name)
    Microcystis piscinalis (Brügger 1863) Forti 1907	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis piscinalis (Brügger 1863) Migula 1905	validly published under the ICN (Botanical Code)	correct name
    Microcystis prasina (Wittrock 1879) Lemmermann 1904	validly published under the ICN (Botanical Code)	correct name
    Microcystis protea Copeland 1936	validly published under the ICN (Botanical Code)	synonym
    Microcystis protocystis Crow 1923	validly published under the ICN (Botanical Code)	correct name
    Microcystis protogenita (Biasoletto 1832) Rabenhorst 1865	validly published under the ICN (Botanical Code)	correct name
    Microcystis pseudofilamentosa Crow 1923	validly published under the ICN (Botanical Code)	correct name
    Microcystis pulverea (Wood 1873) Migula 1905	validly published under the ICN (Botanical Code)	correct name
    Microcystis pulverea (Wood 1873) Forti 1907	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis punctata Schiller 1954	validly published under the ICN (Botanical Code)	correct name
    Microcystis ramosa Bharadwaja 1935	validly published under the ICN (Botanical Code)	correct name
    Microcystis reinboldii (Richter 1891) Forti 1907	validly published under the ICN (Botanical Code)	synonym
    Microcystis richteriana (Hieronymus 1892) Silva 1996	validly published under the ICN (Botanical Code)	correct name
    Microcystis robusta (Clark 1908) Nygaard 1925	validly published under the ICN (Botanical Code)	correct name
    Microcystis rosea Kufferath 1942	validly published under the ICN (Botanical Code)	correct name
    Microcystis roseopersicina corrig. (Kützing 1845) West 1904	validly published under the ICN (Botanical Code)	correct name
    Microcystis roseopersicinus (Kützing 1845) West 1904	inaccurate spelling (ICN [Botanical Code])	misspelling
    Microcystis salina (Woronichin 1929) Elenkin 1938	validly published under the ICN (Botanical Code)	synonym
    Microcystis salinarum (Hansgirg 1887) Silva 1996	validly published under the ICN (Botanical Code)	correct name
    Microcystis scripta (Richter 1886) Lemmermann 1903	validly published under the ICN (Botanical Code)	correct name
    Microcystis smithii Komárek and Anagnostidis 1995	validly published under the ICN (Botanical Code)	correct name
    Microcystis splendens Hollenberg 1939	validly published under the ICN (Botanical Code)	correct name
    Microcystis stagnalis (Lemmermann 1900) Lemmermann 1903	validly published under the ICN (Botanical Code)	synonym
    Microcystis supersalsa Schiller 1956	validly published under the ICN (Botanical Code)	correct name
    Microcystis testacea (Braun ex Kützing 1849) Elenkin 1936	validly published under the ICN (Botanical Code)	correct name
    Microcystis thermalis Yoneda 1938	validly published under the ICN (Botanical Code)	correct name
    Microcystis thermalis (Brügger 1863) Claus 1959	validly published under the ICN (Botanical Code), illegitimate name, later homonym	synonym
    Microcystis toxica Stephens 1948	validly published under the ICN (Botanical Code)	correct name
    Microcystis toxica Stephens 1949	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Microcystis viridis (Braun 1865) Lemmermann 1903	validly published under the ICN (Botanical Code)	correct name
    Microcystis wesenbergii (Komárek 1958) Komárek ex Komárek 2006	validly published under the ICN (Botanical Code)	correct name
    Microcystis zanardinii (Hauck 1877) Silva 1996	validly published under the ICN (Botanical Code)	correct name

Parent taxon: Microcystaceae Elenkin 1933

Assigned by: Elenkin AA. O sistematicheskom podrazdenii poryadka Chroococcales Geitler (1925). Trudy Botanicheskogo Instituta Akademii Nauk SSSR, Series 2, Sporovye Rasteniya 1933; 1:17-21.

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Record number: 6512