Species Paeniclostridium sordellii

Name: Paeniclostridium sordellii (Hall and Scott 1927) Sasi Jyothsna et al. 2016

Category, proposed as: species, comb. nov.

Basonym: "Bacillus sordellii" Hall and Scott 1927

Etymology: sor.del’li.i. N.L. gen. masc. n. sordellii, referring to Sordelli

Pronunciation (Latin), gender: pa͡e-ni-klos-TRI-di-um sor-DEL-li-i, neuter

Type strain: ATCC 9714; BCRC 10649; CCRC 10649; CCUG 9284; CIP 103658; DSM 2141; JCM 3814; LMG 15708; NCIB 10717; NCIMB 10717

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB550230 Analyse FASTA

Valid publication: Sasi Jyothsna TS, Tushar L, Sasikala C, Ramana CV. Paraclostridium benzoelyticum gen. nov., sp. nov., isolated from marine sediment and reclassification of Clostridium bifermentans as Paraclostridium bifermentans comb. nov. Proposal of a new genus Paeniclostridium gen. nov. to accommodate Clostridium sordellii and Clostridium ghonii. Int J Syst Evol Microbiol 2016; 66:1268-1274. 🇮🇳

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    Paraclostridium sordellii (Hall and Scott 1927) Bello et al. 2024	homotypic synonym, validly published under the ICNP
    Clostridium sordellii (Hall and Scott 1927) Prévot 1938 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    "Bacillus sordellii" Hall and Scott 1927	homotypic synonym, not validly published, basonym of name in Approved Lists

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.00005 (N = 9).
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 1, note = "animal pathogen - biological class of risk animal: 2". — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 2, note = "ht". — 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 43 times in PubMed until 2026-06-11.
  • 🙆 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 risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species was isolated from feces in healthy individuals. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 This name was not found in the expected IJSEM notification list.

Parent taxon: Paeniclostridium Sasi Jyothsna et al. 2016

Assigned by: Sasi Jyothsna TS, Tushar L, Sasikala C, Ramana CV. Paraclostridium benzoelyticum gen. nov., sp. nov., isolated from marine sediment and reclassification of Clostridium bifermentans as Paraclostridium bifermentans comb. nov. Proposal of a new genus Paeniclostridium gen. nov. to accommodate Clostridium sordellii and Clostridium ghonii. Int J Syst Evol Microbiol 2016; 66:1268-1274. 🇮🇳

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Record number: 793946