Name: Paraclostridium sordellii (Hall and Scott 1927) Bello et al. 2024

Category: Species

Proposed as: 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: … 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: Bello S, McQuay S, Rudra B, Gupta RS. Robust demarcation of the family Peptostreptococcaceae and its main genera based on phylogenomic studies and taxon-specific molecular markers. Int J Syst Evol Microbiol 2024; 74:6247. 🇨🇦

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 74, part 2 of the IJSEM. Int J Syst Evol Microbiol 2024; 74:6301.

Nomenclatural status: validly published under the ICNP

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

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

• Synonyms:

  • Name	Kind
    Paeniclostridium sordellii (Hall and Scott 1927) Sasi Jyothsna et al. 2016	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:
  • ❗ Paraclostridium sordellii 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 Paraclostridium.
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Clostridium sordellii (Hall and Scott 1927) Prévot 1938 (Approved Lists 1980), which has a risk group (Canada) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Clostridium sordellii (Hall and Scott 1927) Prévot 1938 (Approved Lists 1980), which has a risk group (Swiss Confederation) above 1. This may require that the name shown here is not treated as the correct name for practical purposes. — The taxon name shown here has no risk group assigned, but is the homotypic synonym of Clostridium sordellii (Hall and Scott 1927) Prévot 1938 (Approved Lists 1980), which has a risk group (Germany) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Paeniclostridium sordellii (Hall and Scott 1927) Sasi Jyothsna et al. 2016, which has a risk group (Germany) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 🎓 Name mentioned 1 time 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 species itself.

Parent taxon: Paraclostridium Sasi Jyothsna et al. 2016

Assigned by: Bello S, McQuay S, Rudra B, Gupta RS. Robust demarcation of the family Peptostreptococcaceae and its main genera based on phylogenomic studies and taxon-specific molecular markers. Int J Syst Evol Microbiol 2024; 74:6247. 🇨🇦

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Record number: 43374