Name: Anaerobacter polyendosporus Duda et al. 1996

Category: Species

Proposed as: sp. nov.

Etymology: po.ly.en.do’spo.rus. Gr. adv. poly, many; Gr. pref. endo-, within; Gr. fem. n. spora, spore; N.L. masc. adj. polyendosporus, (forming) several endospores

Pronunciation, gender: po-ly-en-DO-spo-rus, masculine

Type strain: DSM 5272; JCM 30710; PS-1; VKM B-1724

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y18189 Analyse FASTA

Effective publication: Duda VI, Lebedinsky AV, Mushegjan MS, Mitjushina IL. A new anaerobic bacterium, forming up to five endospores per cell-Anaerobacter polyendosporus gen. et spec. nov. Arch. Microbiol. 1987; 148:121-127.

IJSEM list: Anonymous. Validation list no. 57. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1996; 46:625-626.

Nomenclatural status: validly published under the ICNP

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

Correct name: Clostridium polyendosporum (Duda et al. 1996) Rainey et al. 2016

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium polyendosporum (Duda et al. 1996) Rainey et al. 2016	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Anaerobacter Duda et al. 1996. Publication: Duda VI, Lebedinsky AV, Mushegjan MS, Mitjushina IL. A new anaerobic bacterium, forming up to five endospores per cell-Anaerobacter polyendosporus gen. et spec. nov. Arch. Microbiol. 1987; 148:121-127.
  • ❗ Anaerobacter polyendosporus 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 Anaerobacter.
  • 😷 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 7 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: Anaerobacter Duda et al. 1996

Assigned by: Duda VI, Lebedinsky AV, Mushegjan MS, Mitjushina IL. A new anaerobic bacterium, forming up to five endospores per cell-Anaerobacter polyendosporus gen. et spec. nov. Arch. Microbiol. 1987; 148:121-127.

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Record number: 773235