Species Clostridium difficile

Name: Clostridium difficile (Hall and O'Toole 1935) Prévot 1938 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Bacillus difficilis" Hall and O'Toole 1935

Etymology: dif.fi.ci’le. L. neut. adj. difficile, difficult (referring to “the unusual difficulty that was encountered in its isolation and study”)

Gender: neuter

Type strain: AS 1.2184; ATCC 9689; BCRC 10642; CCRC 10642; CCUG 4938; CIP 104282; DSM 1296; JCM 1296; LMG 15861; NCIB 10666; NCIMB 10666; NCTC 11209

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: HM245939 Analyse FASTA

Effective publication: Prévot AR. Études de systématique bactérienne. IV. Critique de la conception actuelle du genre Clostridium. Annales de l'Institut Pasteur (Paris) 1938; 61:72-91.

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

Correct name: Clostridioides difficile (Hall and O'Toole 1935) Lawson et al. 2016

Risk group: 2

Synonyms:

Name	Kind
"Peptoclostridium difficile" (Hall and O'Toole 1935) Yutin and Galperin 2013	homotypic synonym, not validly published
Clostridioides difficile (Hall and O'Toole 1935) Lawson et al. 2016	homotypic synonym, validly published under the ICNP
"Bacillus difficilis" Hall and O'Toole 1935	homotypic synonym, not validly published, basonym of name in Approved Lists

Notes:
- Clostridium difficile is the correct name 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.
- See Oren and Rupnik (2018) for details on the nomenclature of this species. Publication: Oren A, Rupnik M. Clostridium difficile and Clostridioides difficile: Two validly published and correct names. Anaerobe 2018; 52:125-126.

Parent taxon: Clostridium Prazmowski 1880 (Approved Lists 1980)

Assigned by: Prévot AR. Études de systématique bactérienne. IV. Critique de la conception actuelle du genre Clostridium. Annales de l'Institut Pasteur (Paris) 1938; 61:72-91.

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Record number: 774867

This LPSN page was printed on 2022-01-29 12:45:41