Name: Enterocloster lavalensis (Domingo et al. 2009) Haas and Blanchard 2020

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium lavalense Domingo et al. 2009

Etymology: la.va.len’sis. N.L. masc. adj. lavalensis, pertaining to the institution, Universit’e Laval, Qu’ebec, Canada

Pronunciation (Latin), gender: … la-wa-LEN-sis, masculine

Type strain: CCRI 9842; CCUG 54291; DSM 19851; JCM 14986; NML 03-A-015

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EF564277 Analyse FASTA

Valid publication: Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34. 🇺🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 1 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:2167-2173.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Clostridium lavalense Domingo et al. 2009	homotypic synonym, validly published under the ICNP

• Notes:
  • 🎓 Name mentioned 2 times in PubMed until 2025-06-04.
  • 🫡 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of the species itself. This name is not taxonomically suspended any more in favour of Clostridium lavalense Domingo et al. 2009. Publication: Domingo MC, Huletsky A, Boissinot M, Helie MC, Bernal A, Bernard KA, Grayson ML, Picard FJ, Bergeron MG. Clostridium lavalense sp. nov., a glycopeptide-resistant species isolated from human faeces. Int J Syst Evol Microbiol 2009; 59:498-503. 🇨🇦 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 59, part 3 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:1259-1261.

Parent taxon: Enterocloster Haas and Blanchard 2020

Assigned by: Haas KN, Blanchard JL. Reclassification of the Clostridium clostridioforme and Clostridium sphenoides clades as Enterocloster gen. nov. and Lacrimispora gen. nov., including reclassification of 15 taxa. Int J Syst Evol Microbiol 2020; 70:23-34. 🇺🇸

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Record number: 5952