Name: Nostoc Vaucher ex Bornet and Flahault 1886

Category: Genus

Proposed as: gen. nov.

Etymology: Nos’toc. Anglo-Saxon n. nosthryl, nostril; German neut. n. Nasenloch, nostril; N.L. neut. n. Nostoc, named because of the slimy nature of the colonies (originally Nostoch)

Gender, pronunciation: neuter (stem: Nostoc-), NOS-tok

Type species: Nostoc commune Vaucher ex Bornet and Flahault 1886

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Bornet É, Flahault C. Revision des Nostocacées hétérocystées contenues dans les principaux herbiers de France (quatrième et dernier fragment). Annales des Sciences Naturelles, Botanique, Septième Série 1886; 7:177-262.

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

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Polycoccus" Kützing 1843	heterotypic synonym, not validly published
    "Polycoccus" Kützing 1841	heterotypic synonym, not validly published
    Stratonostoc Elenkin 1931	heterotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Amorphonostoc Elenkin 1936	heterotypic synonym, validly published under the ICN (Botanical Code)

• Notes:
  • 🥇 Nomenclatural type of the class Nostocophyceae Christensen 1978. Publication: Christensen T. Annotations to a textbook of phycology. Bot. Tidsskr. 1978; 73:65-70.
  • 🥇 Nomenclatural type of the family Nostocaceae Eichler 1886. Publication: Eichler AW. Syllabus der Vorlesungen über specielle und medicinisch-pharmaceutische Botanik, 4. Aufl. Gebrüder Borntraeger, Berlin, 1886.
  • 🥇 Nomenclatural type of the family Nostocaceae corrig. Frank 1886. Publication: Frank AB. Dr. Johannes Leunis Synopsis der Pflanzenkunde. Aufl. 3. Band. 3 Specielle Botanik. Kryptogamen. Hahn'sche Buchhandlung, Hannover, 1886.
  • 🥇 Nomenclatural type of the family "Nostocidae" Walton 1931. Publication: Walton LB. Studies concerning organisms occurring in water supplies with particular reference to those found in Ohio. Part I. Ohio Biol. Surv. 1931; 5:1-86.
  • 🥇 Nomenclatural type of the family Nostocaceae Wolle 1887. Publication: Wolle F. Fresh Water Algae of the United States. The Comenius Press, Bethlehem, Pa., 1887.
  • 🥇 Nomenclatural type of the family Nostochaceae Frank 1886. Publication: Frank AB. Dr. Johannes Leunis Synopsis der Pflanzenkunde. Aufl. 3. Band. 3 Specielle Botanik. Kryptogamen. Hahn'sche Buchhandlung, Hannover, 1886.
  • 🥇 Nomenclatural type of the family "Nostoceae" Kützing 1843. Publication: Kützing FT. Ueber die systematische Eintheilung der Algen. Linnaea 1843; 17:86.
  • 🥇 Nomenclatural type of the order Nostochinae Borzì 1914. Publication: Borzì A. Studi sulle Mixoficee. I. Cenni generali - Systema Myxophycearum. Nuovo Giornale Botanico Italiano Ser 2 1914; 21:307-360.
  • 🥇 Nomenclatural type of the order Nostocales corrig. Walton 1931. Publication: Walton LB. Studies concerning organisms occurring in water supplies with particular reference to those found in Ohio. Part I. Ohio Biol. Surv. 1931; 5:1-86.
  • 🥇 Nomenclatural type of the order Nostocales corrig. Borzì 1914. Publication: Borzì A. Studi sulle Mixoficee. I. Cenni generali - Systema Myxophycearum. Nuovo Giornale Botanico Italiano Ser 2 1914; 21:307-360.
  • 🥇 Nomenclatural type of the order Nostocales Geitler 1925. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • 🥇 Nomenclatural type of the order "Nostochineae" Thuret 1886. Publication: Ardissone F. Phycologia mediterranea. Parte IIa. Oosporee-Zoosporee-Schizosporee. Tipografia Maj e Malnati, Varese, 1886.
  • 🥇 Nomenclatural type of the order Nostocales Cavalier-Smith 2002. Publication: Cavalier-Smith T. The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification. Int J Syst Evol Microbiol 2002; 52:7-76. 🇬🇧
  • 🥇 Nomenclatural type of the order "Nostocales" corrig. Thuret 1886. Publication: Ardissone F. Phycologia mediterranea. Parte IIa. Oosporee-Zoosporee-Schizosporee. Tipografia Maj e Malnati, Varese, 1886.
  • 🥇 Nomenclatural type of the order Nostocidea Walton 1931. Publication: Walton LB. Studies concerning organisms occurring in water supplies with particular reference to those found in Ohio. Part I. Ohio Biol. Surv. 1931; 5:1-86.
  • 🥇 Nomenclatural type of the order "Nostochinae" Endlicher 1836. Publication: Endlicher NN. Gen. plant. Unknown Publisher, Unknown City, 1836.
  • 🥇 Nomenclatural type of the subclass "Nostocophycidae" Hoffmann et al. 2005. Publication: Hoffmann L, Komárek J, Kastovsky J. System of cyanoprokaryotes (cyanobacteria) - state in 2004. Algological Studies 2005; 117:95-115. 🇱🇺
  • 🥇 Nomenclatural type of the subclass Nostocophycidae corrig. Bennett and Murray 1889. Publication: Bennett AW, Murray G. A handbook of cryptogamic botany. Longmans, Green & Co., London, 1889.
  • 🥇 Nomenclatural type of the subclass Nostochineae Bennett and Murray 1889. Publication: Bennett AW, Murray G. A handbook of cryptogamic botany. Longmans, Green & Co., London, 1889.
  • 🥇 Nomenclatural type of the tribe Nostoceae Kützing ex Bornet and Flahault 1886. Publication: Bornet É, Flahault C. Revision des Nostocacées hétérocystées contenues dans les principaux herbiers de France (quatrième et dernier fragment). Annales des Sciences Naturelles, Botanique, Septième Série 1886; 7:177-262.
  • 🧕 Bennett and Murray (1889) assigned this genus to the subclass Nostocophycidae corrig. Bennett and Murray 1889. Publication: Bennett AW, Murray G. A handbook of cryptogamic botany. Longmans, Green & Co., London, 1889.
  • 🧕 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. 🇺🇸
  • 🧕 Bornet and Flahault (1886) assigned this genus to the tribe Nostoceae Kützing ex Bornet and Flahault 1886. Publication: Bornet É, Flahault C. Revision des Nostocacées hétérocystées contenues dans les principaux herbiers de France (quatrième et dernier fragment). Annales des Sciences Naturelles, Botanique, Septième Série 1886; 7:177-262.
  • 🧕 Bornet and Flahault (1886) assigned this genus to the tribe Nostoceae Kützing ex Bornet and Flahault 1886. Publication: Bornet É, Flahault C. Revision des Nostocacées hétérocystées contenues dans les principaux herbiers de France (Troisième fragment). Annales des Sciences Naturelles, Botanique, Septième série 1886; 5:51-129.
  • 🧕 Borzi (1914) assigned this genus to the order Nostocales corrig. Borzì 1914. Publication: Borzì A. Studi sulle Mixoficee. I. Cenni generali - Systema Myxophycearum. Nuovo Giornale Botanico Italiano 1914; Ser 2 (21):307-360.
  • 🧕 Cavalier-Smith (1998) assigned this genus to the subphylum "Phycobacteria" Cavalier-Smith 1998. Publication: Cavalier-Smith T. A revised six-kingdom system of life. Biol Rev Camb Philos Soc 1998; 73:203-266. 🇬🇧
  • 🧕 Christensen (1978) assigned this genus to the class Nostocophyceae Christensen 1978. Publication: Christensen T. Annotations to a textbook of phycology. Botanisk Tidsskrift 1978; 73:65-70.
  • 🧕 Geitler (1925) assigned this genus to the order Nostocales corrig. Borzì 1914. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • 🧕 Komarek and Golubic (1990) assigned this genus to the subfamily "Nostocoideae". Publication: Komarek J, Golubic S. Guide to the Nomenclature and formal taxonomic treatment of oxyphototroph prokaryotes (Cyanoprokaryotes). Unknown Publisher, Unknown City, 1990.
  • 🧕 Walton (1931) assigned this genus to the order Nostocales corrig. Borzì 1914. Publication: Walton LB. Studies concerning organisms occurring in water supplies with particular reference to those found in Ohio. Part I. Ohio Biol. Surv. 1931; 5:1-86.
  • 🧕 Warming (1890) assigned this genus to the class Schizophyceae Knoblauch 1890. Publication: Warming E. Handbuch der systematischen Botanik. Deutsche Ausgabe von Dr. Emil Knoblauch. Unknown Publisher, Berlin, 1890.
  • 🧕 Wolle (1887) assigned this genus to the tribe Nostoceae Kützing ex Bornet and Flahault 1886. Publication: Wolle F. Fresh Water Algae of the United States. The Comenius Press, Bethlehem, Pa., 1887.
  • 🚋 The type species of this genus has alternatively been placed in the genus Stratonostoc Elenkin 1931. Publication: Elenkin AA. O nekotorykh s"yedobnykh presnovodnykh vodoroslyakh [About some edible freshwater algae]. Priroda 1931; 1931:965-992.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Nosboc"; "Nosroc"; "Nostac"; "Nostec"; "Nostoa"; "Nostoe".
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Pal et al. (2025). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: SP: 3; MCC: 3; PCC: 2; FCME: 2; CCALA: 2; BRY: 2; NIVA-CYA: 1; BISH: 1; UC: 1.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🧍 Komarek and Golubic (1990) emphasize that this name is a pre-starting-point synonym. 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 "NSTC" 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.
  • 🧍 See Potts (1997) for the origin of the genus name. Publication: Potts M. Etymology of the Genus Name Nostoc (Cyanobacteria). International Journal of Systematic Bacteriology 1997; 47:584-584. 🇺🇸

Subdivision:

Number of child taxa with a validly published and correct name: 94
Number of child taxa with a validly published name, including synonyms: 104
Total number of child taxa: 123

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Nostoc alatosporum Sant'Anna et al. 2007	validly published under the ICN (Botanical Code)	correct name
    Nostoc album Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    "Nostoc amparaii" Walter et al. 2017	not validly published	preferred name
    Nostoc amplissimum Setchell 1899	validly published under the ICN (Botanical Code)	correct name
    Nostoc antarctica West and West 1911	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc antarcticum corrig. West and West 1911	validly published under the ICN (Botanical Code)	synonym
    "Nostoc azollae" Strasburger 1873	not validly published	preferred name
    Nostoc belmonticum Archibald 1967	validly published under the ICN (Botanical Code)	correct name
    Nostoc bicalyptratum Skuja 1937	validly published under the ICN (Botanical Code)	correct name
    Nostoc borneti Gain 1911	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc bornetii corrig. Gain 1911	validly published under the ICN (Botanical Code)	correct name
    Nostoc borzioides Skinner and Entwisle 2002	validly published under the ICN (Botanical Code)	correct name
    "Nostoc botryoides" (Linné 1753) Agardh 1817	not validly published	preferred name
    Nostoc breve Kumar et al. 2024	validly published under the ICN (Botanical Code)	correct name
    Nostoc brittonii Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Nostoc caeruleum Lyngbye ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	synonym
    Nostoc calcicola Brébisson ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc carneum Agardh ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc catenatum Dangeard 1949	validly published under the ICN (Botanical Code)	correct name
    Nostoc cavernicola Miscoe and Johansen 2016	validly published under the ICN (Botanical Code)	correct name
    Nostoc citrisporum Prasad and Mehrotra 1977	validly published under the ICN (Botanical Code)	correct name
    Nostoc coimbatorense Laloraya and Mitra 1974	validly published under the ICN (Botanical Code)	correct name
    "Nostoc commune" Vaucher 1803	not validly published, lectotype	synonym
    Nostoc commune Vaucher ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc conglomeratum Hirose 1962	validly published under the ICN (Botanical Code)	correct name
    Nostoc conicocellulare Huber-Pestalozzi 1925	validly published under the ICN (Botanical Code)	correct name
    Nostoc copiosum Kogan and Jazkulijeva 1972	validly published under the ICN (Botanical Code)	correct name
    Nostoc cordubense corrig. Prosperi 1985	validly published under the ICN (Botanical Code)	correct name
    Nostoc cordubensis Prosperi 1985	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc crassisporum Geitler 1933	validly published under the ICN (Botanical Code)	correct name
    Nostoc cuticulare Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    "Nostoc cycadae" Maruyama and Fukushima 1963	not validly published	preferred name
    Nostoc desertorum Reháková and Johansen 2007	validly published under the ICN (Botanical Code)	correct name
    Nostoc disciforme Fritsch 1912	validly published under the ICN (Botanical Code)	correct name
    Nostoc edaphicum Kondratyeva 1962	validly published under the ICN (Botanical Code)	correct name
    Nostoc elgonense Naumann 1925	validly published under the ICN (Botanical Code)	correct name
    Nostoc ellipsosporum Rabenhorst ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc entophytum Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc epilithicum Ercegović 1925	validly published under the ICN (Botanical Code)	correct name
    Nostoc flagelliforme Harvey ex Molinari-Novoa et al. 2016	validly published under the ICN (Botanical Code)	correct name
    Nostoc fonticola Brabez 1941	validly published under the ICN (Botanical Code)	correct name
    Nostoc fritschii (Mitra 1950) Schwabe and El Ayouty 1966	validly published under the ICN (Botanical Code)	synonym
    Nostoc fuscescens Fritsch 1912	validly published under the ICN (Botanical Code)	correct name
    Nostoc gelatinosum Schousboe ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc ghotgewadense corrig. Hegde and Somanna 1992	validly published under the ICN (Botanical Code)	correct name
    Nostoc ghotgewadensis Hegde and Somanna 1992	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc globosum Kumar et al. 2024	validly published under the ICN (Botanical Code)	correct name
    Nostoc hatei Dixit 1936	validly published under the ICN (Botanical Code)	correct name
    Nostoc hederulae (Kützing 1849) Meneghini 1889	validly published under the ICN (Botanical Code)	correct name
    Nostoc humifusum Carmichael ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    "Nostoc hyalinum" Roemer 1845	not validly published	preferred name
    Nostoc hyalinum Bennett 1886	validly published under the ICN (Botanical Code)	synonym
    Nostoc imperfectum Schwabe and El Ayouty 1966	validly published under the ICN (Botanical Code)	correct name
    Nostoc interbryum Sant'Anna et al. 2007	validly published under the ICN (Botanical Code)	correct name
    Nostoc intestinale An 1992	validly published under the ICN (Botanical Code)	correct name
    Nostoc jammuense Kumar et al. 2024	validly published under the ICN (Botanical Code)	correct name
    Nostoc kihlmanii Lemmermann 1900	validly published under the ICN (Botanical Code)	correct name
    "Nostoc leptonema" Reinsch 1876	not validly published	preferred name
    Nostoc letestui Frémy 1930	validly published under the ICN (Botanical Code)	correct name
    Nostoc lichenoides Vaucher ex Frank 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc linckia Bornet ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc loculare corrig. An 1992	validly published under the ICN (Botanical Code)	correct name
    Nostoc locularis An 1992	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc longstaffii Fritsch 1912	validly published under the ICN (Botanical Code)	correct name
    Nostoc lophotelos An 1992	validly published under the ICN (Botanical Code)	correct name
    Nostoc maculiforme Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc membranaceum Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Nostoc microscopicum Carmichael ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	synonym
    Nostoc minutum Desmazières ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc montejanii Carmona-Jiménez et al. 2023	validly published under the ICN (Botanical Code)	correct name
    Nostoc muscorum Agardh ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	synonym
    "Nostoc myriococcum" Montagne 1856	not validly published	preferred name
    Nostoc neudorfense Singh et al. 2020	validly published under the ICN (Botanical Code)	correct name
    "Nostoc nubilosum" Schousboe 1892	not validly published	synonym
    Nostoc nylstromicum Claassen 1961	validly published under the ICN (Botanical Code)	correct name
    Nostoc opalinum Bennett 1890	validly published under the ICN (Botanical Code)	correct name
    Nostoc oromo Mesfin and Johansen 2020	validly published under the ICN (Botanical Code)	correct name
    Nostoc oryzae (Fritsch 1949) Komárek and Anagnostidis 1989	validly published under the ICN (Botanical Code)	correct name
    Nostoc pachydermaticum Gain 1911	validly published under the ICN (Botanical Code)	correct name
    Nostoc paludosum Kützing ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc paradoxum Welwitsch ex West and West 1897	validly published under the ICN (Botanical Code)	correct name
    Nostoc parmelioides Kützing ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc peltigerae Letellier 1918	validly published under the ICN (Botanical Code)	correct name
    Nostoc piscinale Kützing ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc planctonicum Poretzky and Tschernov 1929	validly published under the ICN (Botanical Code)	correct name
    "Nostoc polysaccum" Reinsch 1876	not validly published	preferred name
    "Nostoc polysporum" Reinsch 1876	not validly published	preferred name
    Nostoc pruniforme Agardh ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	synonym
    Nostoc pseudogelatinosum Claassen 1961	validly published under the ICN (Botanical Code)	correct name
    Nostoc punctiforme (Kützing 1841) Hariot 1891	validly published under the ICN (Botanical Code)	correct name
    Nostoc punense corrig. Singh 2016	validly published under the ICN (Botanical Code)	synonym
    Nostoc punensis Singh 2016	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc ramosum Ercegović 1925	validly published under the ICN (Botanical Code)	correct name
    Nostoc repandum West and West 1897	validly published under the ICN (Botanical Code)	correct name
    "Nostoc reyesii" Walter et al. 2017	not validly published	preferred name
    Nostoc rivulare Filarszky 1900	validly published under the ICN (Botanical Code)	correct name
    Nostoc sergianum Borzì 1892	validly published under the ICN (Botanical Code)	correct name
    Nostoc shensiense Jao 1948	validly published under the ICN (Botanical Code)	correct name
    Nostoc sikkimense Pal et al. 2025	validly published under the ICN (Botanical Code)	correct name
    Nostoc simulans Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Nostoc sinuatum An 1992	validly published under the ICN (Botanical Code)	correct name
    Nostoc sphaericum Vaucher ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc sphaeroides Kützing ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc sphaerosporum Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Nostoc spinosa Tiwari 1979	inaccurate spelling (ICN [Botanical Code])	misspelling
    Nostoc spinosum corrig. Tiwari 1979	validly published under the ICN (Botanical Code)	correct name
    Nostoc spongiaeforme Agardh ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc spumigena (Mertens 1822) Drouet 1978	validly published under the ICN (Botanical Code)	correct name
    Nostoc subtilissimum Reinsch 1890	validly published under the ICN (Botanical Code)	correct name
    Nostoc symbioticum Wettstein 1915	validly published under the ICN (Botanical Code)	correct name
    Nostoc thermophilum Vouk 1916	validly published under the ICN (Botanical Code)	correct name
    Nostoc thermotolerans Suradkar et al. 2017	validly published under the ICN (Botanical Code)	synonym
    Nostoc tibeticum Jao and Lee 1966	validly published under the ICN (Botanical Code)	correct name
    Nostoc tlalocii Carmona-Jiménez et al. 2023	validly published under the ICN (Botanical Code)	correct name
    Nostoc torulosum Hirose 1962	validly published under the ICN (Botanical Code)	correct name
    Nostoc undulatum Archibald 1967	validly published under the ICN (Botanical Code)	correct name
    Nostoc vailantii Behre 1953	validly published under the ICN (Botanical Code)	correct name
    Nostoc verrucosum Vaucher ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc vesicarium Frank 1886	validly published under the ICN (Botanical Code)	correct name
    Nostoc viride Sant'Anna et al. 2007	validly published under the ICN (Botanical Code)	correct name
    Nostoc wichmannii Weber-Van Bosse 1913	validly published under the ICN (Botanical Code)	correct name
    Nostoc willei Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Nostoc zetterstedtii Areschoug ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	synonym

Parent taxon: Nostocaceae Eichler 1886

Assigned by: Strunecky O, Ivanova AP, Mares J. An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis. J Phycol 2023; 59:12-51. 🇨🇿

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Record number: 6402