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Taxon: Genus "Cyanobium" Rippka and Cohen-Bazire 1983 nom. inval. (prokaryote)
 Entity: 

Authorship

SN2000 author citation:  R. Rippka & G. Cohen-Bazire, 1983, nom. prok. nov., nom. praeinit.
Original name, rank & spelling:  Rippka, R. & Cohen-Bazire, G. 1983. Ann. Microbiol. (Inst. Pasteur) 134 (1, suppl. B): 31 ("We propose the creation of this genus"); 32 ("new genus").
Original use as a prokaryotic name:  op. cit.: 25 ("Bacteriological Code").

Attributes

Prokaryotic name, by original use (: nom. prok. nov.) [ICNB/ICNP (>1947)] Ref: S.J. Brands (comp.), 1989-present. Syst. Nat. 2000: 2 Dec 2025.
Prokaryotic name (: nom. prok.) [ICNB/ICNP] Ref: D.R. Boone & R.W. Castenholz (eds.), 2001. In G.M. Garrity (ed.), Bergey's Man. Syst. Bacteriol. (ed. 2) 1: 494 (M. Herdman, R.W. Castenholz, I. Iteman, J.B. Waterbury & R. Rippka: key), 498 (R. Rippka, R.W. Castenholz & M. Herdman: "Form-genus ... Rippka and Cohen-Bazire 1983").
Effectively, but not validly, published name (nom. inval.) [ICNP, 2019: Rule 25, App. 7 (IJSEM)] Ref: G.M. Garrity et al. 2007. Taxon. Outl. Bacteria Archaea (v. 7.7, pt. 2): 44; CyanoDB2[19 Feb 2026] ("Invalid Genus").
Pre-starting-point name (nom. inval.[: praeinit.]) [ICSB, 2000: Minute 7(3) (Cyanobacteria(ICNP), <1999)] Ref: S.J. Brands (comp.), 1989-present. Syst. Nat. 2000: 2 Dec 2025.
Validly published name under the IC[B]N [ICNP, 2022: Gen. Consid. 5, Rule 30 (Cyanobacteria; >2020)] Ref: LPSN, 2020-present. LPSN: [3 Dec 2025]. [false (3 Dec 2025)].

Types

Type, by original designation and monotypy: Cyanobium gracile Rippka and Cohen-Bazire 1983 nom. inval. Ref: R. Rippka & G. Cohen-Bazire, 1983: 32. [new]

Variants

Name in subsequent code of nomenclature: Cyanobium (Genus) Rippka & Cohen-Baz. (1983), nom. inval. Ref: S.J. Brands (comp.), 1989-present: [<2 Dec 2025].
Name in alternative code of nomenclature: Cyanobium (Genus) Rippka & Cohen-Baz. (1983), nom. inval. Ref: LPSN, 2020-present: [19 Feb 2026].
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Last updated: 28 Aug 2026