Species Clostridium villosum

Name: Clostridium villosum Love et al. 1979 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: vil.lo’sum. L. neut. adj. villosum, hairy, shaggy, rough (referring to the colonial morphology)

Pronunciation (Latin), gender: … wil-LO-sum, neuter

Type strain: ATCC 33388; DSM 1645; NCTC 11220; VSB 3349

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X73452 Analyse FASTA

Effective publication: Love DN, Jones RF, Bailey M. Clostridium villosum sp. nov. from subcutaneous abscesses in cats. International Journal of Systematic Bacteriology 1979; 29:241-244.

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: Filifactor villosus (Love et al. 1979) Collins et al. 1994

Risk group: 1

Synonyms:

Name	Kind
Filifactor villosus (Love et al. 1979) Collins et al. 1994	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Clostridium villosum 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 Clostridium.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — 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 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 genus.

Parent taxon: Clostridium Prazmowski 1880 (Approved Lists 1980)

Assigned by: Love DN, Jones RF, Bailey M. Clostridium villosum sp. nov. from subcutaneous abscesses in cats. International Journal of Systematic Bacteriology 1979; 29:241-244.

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Record number: 775022

This LPSN page was printed on 2026-01-24 21:07:57

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Species Clostridium villosum