Name: Fusobacterium plautii corrig. Séguin 1928 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: plaut’i.i. N.L. gen. masc. n. plautii, of Plaut, named for H.C. Plaut, the bacteriologist who first described this organism

Gender: neuter

Type strain: ATCC 29863; CCUG 28093; DSM 4000; Prévot S1; VPI 0310

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY724678 Analyse FASTA

Effective publication: Seguin P. Culture du Fusobacterium plauti forme mobile du bacille fusiforme. Comptes Rendus des Séances de la Société de Biologie (Paris) 1928; 99:439-442.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Flavonifractor plautii (Séguin 1928) Carlier et al. 2010

Risk group: 1

• Synonyms:

  • Name	Kind
    Eubacterium plautii (Séguin 1928) Hofstad and Aasjord 1982	homotypic synonym, validly published under the ICNP
    Clostridium orbiscindens Winter et al. 1991	heterotypic synonym, validly published under the ICNP
    Fusobacterium plauti Séguin 1928 (Approved Lists 1980)	other spelling of name, inaccurate spelling
    Flavonifractor plautii (Séguin 1928) Carlier et al. 2010	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Carlier et al. (2010), this species is an earlier heterotypic synonym of Clostridium orbiscindens Winter et al. 1991. Publication: Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590.
  • ❗ Fusobacterium plautii is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Fusobacterium.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 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.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 The original spelling of the specific epithet, plauti (sic), has been corrected by Hofstad and Aasjord 1982. Publication: Hofstad T, Aasjord P. Eubacterium plautii (Séguin 1928) comb. nov. Int. J. Syst. Bacteriol. 1982; 32:346-349.

Parent taxon: Fusobacterium Knorr 1922 (Approved Lists 1980)

Assigned by: Seguin P. Culture du Fusobacterium plauti forme mobile du bacille fusiforme. Comptes Rendus des Séances de la Société de Biologie (Paris) 1928; 99:439-442.

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Record number: 776410