Name: Flexibacter filiformis (ex Solntseva 1940) Reichenbach 1989

Category: Species

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

Etymology: fi.li.for’mis. L. neut. n. filum, a thread; L. masc./fem. adj. suff. -formis, -like, in the shape of; from L. fem. n. forma, figure, shape, appearance; N.L. masc. adj. filiformis, thread-shaped

Pronunciation, gender: … fi-li-FOR-mis, masculine

Type strain: ATCC 29495; CCUG 12809; CIP 106401; DSM 527; Fx e1 Reichenbach; HAMBI 1966; IFO 15056; JCM 21160; NBRC 15056

Conduct genome-based taxonomy at

16S rRNA gene: AB078049 Analyse FASTA

Effective publication: Reichenbach H. Genus Flexibacter Soriano 1945, 92, AL emend. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2061-2071. 🇩🇪

IJSEM list: Anonymous. Validation list no. 31. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1989; 39:495-497.

Nomenclatural status: validly published under the ICNP

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

Correct name: Chitinophaga filiformis (Reichenbach 1989 ex Solntseva 1940) Kämpfer et al. 2006

Risk group: 1

• Synonyms:

  • Name	Kind
    Chitinophaga filiformis (Reichenbach 1989 ex Solntseva 1940) Kämpfer et al. 2006	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Flexibacter filiformis 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 Flexibacter.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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 3 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 other species in the genus.

Parent taxon: Flexibacter Soriano 1945 (Approved Lists 1980)

Assigned by: Reichenbach H. Genus Flexibacter Soriano 1945, 92, AL emend. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2061-2071. 🇩🇪

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Record number: 785451