Name: Clostridioides mangenotii (Prévot and Zimmès-Chaverou 1947) Lawson et al. 2016

Category: Species

Proposed as: comb. nov.

Basonym: "Inflabilis mangenoti" Prévot and Zimmès-Chaverou 1947

Etymology: man.gen.ot’i.i. N.L. gen. masc. n. mangenotii, pertaining to Professor G. Mangenot, Italian bacteriologist

Gender: neuter

Type strain: ATCC 25761; DSM 1289; JCM 1428

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59098 Analyse FASTA

Effective publication: Lawson PA, Citron DM, Tyrrell KL, Finegold SM. Reclassification of Clostridium difficile as Clostridioides difficile (Hall and O'Toole 1935) Prevot 1938. Anaerobe 2016; 40:95-99.

IJSEM list: Oren A, Garrity GM. Validation list no. 171. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2016; 66:3761-3764.

Nomenclatural status: validly published under the ICNP

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

Correct name: Metaclostridioides mangenotii (Prévot and Zimmès-Chaverou 1947) Bello et al. 2024

Risk group: 1

• Synonyms:

  • Name	Kind
    Metaclostridioides mangenotii (Prévot and Zimmès-Chaverou 1947) Bello et al. 2024	homotypic synonym, validly published under the ICNP
    Clostridium mangenotii (Prévot and Zimmès-Chaverou 1947) McClung and McCoy 1957 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    "Inflabilis mangenoti" Prévot and Zimmès-Chaverou 1947	homotypic synonym, not validly published, basonym of name in Approved Lists

• Notes:
  • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Contrasting the term "chemotaxonomic" with "phenotypic" is not recommended. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281.
  • ❗ Clostridioides mangenotii 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 Clostridioides.
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 2 times in PubMed until 2024-03-27.
  • 🙅 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 genus.

Parent taxon: Clostridioides Lawson et al. 2016

Assigned by: Lawson PA, Citron DM, Tyrrell KL, Finegold SM. Reclassification of Clostridium difficile as Clostridioides difficile (Hall and O'Toole 1935) Prevot 1938. Anaerobe 2016; 40:95-99.

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Record number: 794454