Species "Bacillus fragilis"

Name: "Bacillus fragilis" Veillon and Zuber 1898

Category: Species

Proposed as: sp. nov.

Etymology: fra’gi.lis. L. masc. adj. fragilis, easily broken, brittle, fragile (relating to the brittle colonies that may form under some culture conditions)

Pronunciation, gender: FRA-gi-lis, masculine

Nomenclatural type: ATCC 25285; CCUG 4856; CIP 77.16; DSM 2151; DSM 29413; JCM 11019; LMG 10263; NBIMCC 8847; NCTC 9343

Conduct genome-based taxonomy at

16S rRNA gene: KP326374 Analyse FASTA

Original publication: Veillon A, Zuber A. Recherches sur quelques microbes strictement anaérobies et leur rôle en pathologie. Archives de Mèdecine Expérimentale et d'Anatomie Pathologique 1898; 10:517-545.

Nomenclatural status: not validly published, basonym of name in Approved Lists

Taxonomic status: synonym (and no standing)

Correct name: Bacteroides fragilis (Veillon and Zuber 1898) Castellani and Chalmers 1919 (Approved Lists 1980)

Risk group: 2

Synonyms:

Name	Kind
Bacteroides fragilis (Veillon and Zuber 1898) Castellani and Chalmers 1919 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
"Bacteroides hominis" Afrizal et al. 2022	heterotypic synonym, not validly published
Bacteroides hominis Liu et al. 2022	heterotypic synonym, validly published under the ICNP

Notes:
- ⏰ According to Committee (2025), this species is an earlier heterotypic synonym of "Bacteroides hominis" Afrizal et al. 2022. Publication: Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
- ⏰ According to Committee (2025), this species is an earlier heterotypic synonym of Bacteroides hominis Liu et al. 2022. Publication: Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - biological class of risk animal: 2". — 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.

Parent taxon: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Veillon A, Zuber A. Recherches sur quelques microbes strictement anaérobies et leur rôle en pathologie. Archives de Mèdecine Expérimentale et d'Anatomie Pathologique 1898; 10:517-545.

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Record number: 4079

This LPSN page was printed on 2026-01-13 15:32:51

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Species "Bacillus fragilis"