Name: Fusobacterium nucleatum subsp. fusiforme (ex Veillon and Zuber 1898) Gharbia and Shah 1992

Category: Subspecies

Proposed as: subsp. nov., nom. rev.

Etymology: fu.si.for’me. L. masc. n. fusus, a spindle; L. fem. n. forma, shape; N.L. neut. adj. fusiforme, spindle shaped

Pronunciation, gender: fu-si-FOR-me, neuter

Type strain: ATCC 51190; CCUG 32880; CIP 104878; DSM 19508; JCM 11024; NCTC 11326

Conduct genome-based taxonomy at

16S rRNA gene: X55403 Analyse FASTA

Valid publication: Gharbia SE, Shah HN. Fusobacterium nucleatum subsp. fusiforme subsp. nov. and Fusobacterium nucleatum subsp. animalis subsp. nov. as additional subspecies within Fusobacterium nucleatum. Int J Syst Bacteriol 1992; 42:296-298. 🇬🇧

IJSEM list: Anonymous. Validation list no. 42. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1992; 42:511.

Nomenclatural status: validly published under the ICNP

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

Correct name: Fusobacterium nucleatum Knorr 1922 (Approved Lists 1980)

Risk group: 2

• Synonyms:

  • Name	Kind
    "Fusobacterium fusiforme" (Veillon and Zuber 1898) Hoffman 1957	homotypic synonym, not validly published, distinct rank
    Fusobacterium nucleatum subsp. animalis Gharbia and Shah 1992	heterotypic synonym, validly published under the ICNP
    Fusobacterium animalis (Gharbia and Shah 1992) Kook et al. 2022	heterotypic synonym, validly published under the ICNP, distinct rank
    Fusobacterium nucleatum subsp. vincentii (ex Knorr 1922) Dzink et al. 1990	heterotypic synonym, validly published under the ICNP
    Fusobacterium nucleatum Knorr 1922 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP, distinct rank
    Fusobacterium vincentii (Dzink et al. 1990 ex Knorr 1922) Kook et al. 2022	heterotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Fusobacterium nucleatum subsp. fusiforme is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Fusobacterium nucleatum within a separate genus Fusobacterium.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — 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.
  • 🙅 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 subspecies. The name is on LoRN because of the recorded risk group of the species itself.

Parent taxon: Fusobacterium nucleatum Knorr 1922 (Approved Lists 1980)

Assigned by: Gharbia SE, Shah HN. Fusobacterium nucleatum subsp. fusiforme subsp. nov. and Fusobacterium nucleatum subsp. animalis subsp. nov. as additional subspecies within Fusobacterium nucleatum. Int J Syst Bacteriol 1992; 42:296-298. 🇬🇧

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Record number: 776407