Name: Cyanocystis Borzì 1882

Category: Genus

Proposed as: gen. nov.

Etymology: Cy.a.no.cys’tis. Gr. masc. n. kyanos, a blue dye; Gr. fem. n. kystis, a bag; N.L. fem. n. Cyanocystis, a blue bag

Gender, pronunciation (Latin): feminine (stem: Cyanocyst-), ky-a-no-KYS-tis

Type species: Cyanocystis versicolor Borzì 1882

Valid publication: Borzì A. Note alla morfologia e biologia delle Alghe Ficocromacee. Fam. IIIa. Rivulariacee. Nuovo Giornale Botanico Italiano 1882; 14:272-315.

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

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Krkia Pevalek 1929	heterotypic synonym, validly published under the ICN (Botanical Code)

• Notes:
  • 🧕 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. 🇺🇸
  • 🧕 Hoffmann et al. (2005) assigned this genus to the family Dermocarpellaceae Ginsburg-Ardré ex Christensen 1978. Publication: Hoffmann L, Komárek J, Kastovsky J. System of cyanoprokaryotes (cyanobacteria) - state in 2004. Algological Studies 2005; 117:95-115. 🇱🇺
  • 🧕 Komarek et al. (2014) assigned this genus to the family Dermocarpellaceae Ginsburg-Ardré ex Christensen 1978. Publication: Komárek J, Kaštovský J, Mareš J, Johansen JR. Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 2014; 86:295-335. 🇨🇿
  • 🧕 Strunecky et al. (2023) assigned this genus to the family Pleurocapsaceae Geitler 1925. Publication: 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. 🇨🇿
  • 🚋 The type species of this genus has alternatively been placed in the genus Dermocarpa Crouan and Crouan 1858. Publication: Geitler L. Cyanophyceae. In: Pascher A (eds), Die Süsswasser-Flora Deutschlands, Österreichs und der Schweiz. Vol. 12, Gustav Fischer, Jena, 1925, p. 1-450.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Cranoeystis"; "Cvanocvstis"; "Cyanecystis"; "Cyanocestis"; "Cyanocyslis"; "Cyanoeyslis"; "Cyanoeystis"; "Cyattocystis"; "Cyonocystis"; "Cyunocystis"; "Gyanocystis"; "Iyanocystis"; "Oyanocystis"; "Oyfmocystis"; "Zyanocystis".
  • 🎰 The BRCs most frequently used for deposits in this group are: UC: 3.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "CYCS" 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: 15
Number of child taxa with a validly published name, including synonyms: 21
Total number of child taxa: 23

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Cyanocystis aquaedulcis (Reinsch 1875) Bourrelly 1984	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis clavata (Setchell and Gardner 1930) Hällfors 1982	validly published under the ICN (Botanical Code)	synonym
    Cyanocystis croatica (Pevalek 1929) Komárek and Anagnostidis 1995	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis farlowii (Børgesen 1902) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis flahaultii (Sauvageau 1892) Komárek and Anagnostidis 1995	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis hemisphaerica (Setchell and Gardner 1918) Kaas 1985	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis mexicana Montejano et al. 1993	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis minima (Geitler 1932) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	synonym
    Cyanocystis olivacea (Reinsch 1875) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis pacifica (Setchell and Gardner 1918) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis parva Conrad 1914	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis plectonematis (Frémy 1930) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis prasina (Reinsch 1875) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	synonym
    Cyanocystis protea (Setchell and Gardner 1918) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    "Cyanocystis pseudoxenococcoides" (Bourrelly 1952) Bourrelly 1970	not validly published	preferred name
    Cyanocystis sphaerica (Setchell and Gardner 1918) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	synonym
    Cyanocystis sphaeroidea (Setchell and Gardner 1918) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis swirenkoi (Shirshov 1929) Hällfors and Munsterhjelm 1982	validly published under the ICN (Botanical Code)	synonym
    Cyanocystis tatrensis (Starmach 1928) Komárek and Anagnostidis 1995	validly published under the ICN (Botanical Code)	correct name
    "Cyanocystis valiaeallorgei" (Bourrelly 1952) Bourrelly 1970	not validly published	preferred name
    Cyanocystis versicolor Borzì 1882	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis violacea (Crouan and Crouan 1858) Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Cyanocystis xenococcoides (Geitler 1933) Compère 1985	validly published under the ICN (Botanical Code)	synonym

Parent taxon: Hydrococcaceae Kützing 1843

Assigned by: Freese HM, Meier-Kolthoff JP, Sarda Carbasse J, Afolayan AO, Goker M. TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity. Nucleic Acids Res 2026; 54:D884-D891. 🇩🇪

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Record number: 6418