Species Clostridium pfennigii

Name: Clostridium pfennigii Krumholz and Bryant 1985

Category: Species

Proposed as: sp. nov.

Etymology: pfen.ni’gi.i. N.L. gen. masc. n. pfennigii, of Pfennig, named after Norbert Pfennig, who first documented the catabolism of methyl groups of benzenoid compounds by an anaerobic bacterium

Pronunciation (Latin), gender: … pfen-NI-gi-i, neuter

Type strain: ATCC 43583; DSM 3222; V5-2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X77838 Analyse FASTA

Valid publication: Krumholz LR, Bryant MP. Clostridium pfennigii sp. nov. uses methoxyl groups of monobenzenoids and produces butyrate. Int. J. Syst. Bacteriol. 1985; 35:454-456. 🇺🇸

Nomenclatural status: validly published under the ICNP

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

Correct name: Oxobacter pfennigii (Krumholz and Bryant 1985) Collins et al. 1994

Risk group: 1

Synonyms:

Name	Kind
Oxobacter pfennigii (Krumholz and Bryant 1985) Collins et al. 1994	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Clostridium pfennigii 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 = "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. — 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 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 genus.

Parent taxon: Clostridium Prazmowski 1880 (Approved Lists 1980)

Assigned by: Krumholz LR, Bryant MP. Clostridium pfennigii sp. nov. uses methoxyl groups of monobenzenoids and produces butyrate. Int. J. Syst. Bacteriol. 1985; 35:454-456. 🇺🇸

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Record number: 774952

This LPSN page was printed on 2026-02-07 11:47:23

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Species Clostridium pfennigii