Name: Isocystis Borzì ex Bornet and Flahault 1886

Category: Genus

Proposed as: gen. nov.

Etymology: I.so.cys’tis. Gr. fem. n. kystis, a bag; N.L. fem. n. Isocystis, a cyanobacterial genus

Gender, pronunciation: feminine (stem: Isocyst-), i-so-KYS-tis

Type species: Isocystis messanensis Borzì ex Bornet and Flahault 1886

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

• Synonyms:

  • Name	Kind
    "Pseudonostoc" Elenkin 1935	heterotypic synonym, not validly published
    Pseudonostoc Elenkin 1949	heterotypic synonym, validly published under the ICN (Botanical Code)

• Notes:
  • 🥇 Nomenclatural type of the family Isocystaceae (Borzì 1886) Elenkin 1917. Publication: Elenkin AA. Ob izmenenii printsipov klassifikatsi poryadka Hormogoneae (Thur.) Kirchn. V klasse sinezelenykh vodoroslej. Zhurn. Russk. Bot. Obshch. 1917; 1:147-165.
  • 🧕 Elenkin (1917) assigned this genus to the family Isocystaceae (Borzì 1886) Elenkin 1917. Publication: Elenkin AA. Ob izmenenii printsipov klassifikatsi poryadka Hormogoneae (Thur.) Kirchn. V klasse sinezelenykh vodoroslej. Zhurn. Russk. Bot. Obshch. 1917; 1:147-165.
  • 🧕 Elenkin (1949) assigned this genus to the family Pseudonostocaceae Elenkin 1949. Publication: Elenkin AA. Sinezeleniye vodorosli SSSR. Monografiya presnovodnykh i nazemnykh S'yanofiseaye, obnaruzhennykh v predelakh SSSR. Spetsial'naya (sistematicheskaya) chast', vyp. II. III. Hormogoneae (Geitl.) Elenk. (okonchaniye). Izdate'stvo Akademii Nauk SSSR, Moscow, 1949.
  • 🧕 Geitler (1925) assigned this genus to the family Oscillatoriaceae Engler 1898. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Isacystis"; "Isecystis"; "Isocrsris"; "Isocyslis"; "Isocyssis"; "Isoeystis"; "Isooystis"; "Jsocystis"; "Tsocystis"; "Zsocystis".
  • 🧍 Pittman et al. (1991) suggested the abbreviation "ISCY" 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: 8
Number of child taxa with a validly published name, including synonyms: 9
Total number of child taxa: 15

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Isocystis andalusica corrig. González Guerrero 1946	validly published under the ICN (Botanical Code)	correct name
    Isocystis andalusicus González Guerrero 1946	inaccurate spelling (ICN [Botanical Code])	misspelling
    Isocystis halobia Anagnostidis and Roussomoustakaki 1991	validly published under the ICN (Botanical Code)	correct name
    "Isocystis infusionum" Borzì ex Bornet and Flahault 1886	not validly published	preferred name
    Isocystis lithophila Ercegović 1932	validly published under the ICN (Botanical Code)	synonym
    Isocystis major Weber-van Bosse 1913	validly published under the ICN (Botanical Code)	correct name
    Isocystis messanensis Borzì ex Bornet and Flahault 1886	validly published under the ICN (Botanical Code)	correct name
    Isocystis minutissima corrig. (Kützing 1843) Komárek and Anagnostidis 1989	validly published under the ICN (Botanical Code)	correct name
    Isocystis minutissimum (Kützing 1843) Komárek and Anagnostidis 1989	inaccurate spelling (ICN [Botanical Code])	misspelling
    "Isocystis moniliformis" Borzì ex Bornet and Flahault 1886	not validly published	preferred name
    Isocystis planctonica Starmach 1962	validly published under the ICN (Botanical Code)	correct name
    Isocystis richteri (Elenkin 1949) Komárek and Anagnostidis 1989	validly published under the ICN (Botanical Code)	correct name
    Isocystis salina corrig. Iwanoff 1901	validly published under the ICN (Botanical Code)	correct name
    Isocystis salinum Iwanoff 1901	inaccurate spelling (ICN [Botanical Code])	misspelling
    "Isocystis spermosiroides" Borzì ex Bornet and Flahault 1886	not validly published	preferred name

Parent taxon: Nostocaceae Eichler 1886

Assigned by: Hoffmann L, Komárek J, Kaštovský J. System of cyanoprokaryotes (cyanobacteria) – state in 2004. Algol. Stud. 2005; 117:95-115.

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Record number: 6396