Name: Providencia friedericiana Müller 1983

Category: Species

Proposed as: sp. nov.

Etymology: frie.de.ri.ci.a’na. N.L. fem. adj. friedericiana, derived from the German names Friederike and Friederich [most of the technical work of this study was done by Friederike Heimbach]

Pronunciation, gender: frie-de-ri-ki-A-na, feminine

Type strain: 1/33; DSM 2620; NCTC 11667

Conduct genome-based taxonomy at

16S rRNA gene: UAUA01000013 Analyse FASTA

Valid publication: Müller HE. Providencia friedericiana, a new species isolated from penguins. Int. J. Syst. Bacteriol. 1983; 33:709-715.

Nomenclatural status: validly published under the ICNP

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

Correct name: Providencia rustigianii Hickman-Brenner et al. 1983

Risk group: 2

• Synonyms:

  • Name	Kind
    Providencia rustigianii Hickman-Brenner et al. 1983	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Hickman-Brenner et al. (1986), this species is a later heterotypic synonym of Providencia rustigianii Hickman-Brenner et al. 1983. Publication: Hickman-Brenner FW, Fanning GR, Mueller HE, Brenner DJ. Priority of Providencia rustigianii Hickman-Brenner, Farmer, Steigerwalt, and Brenner 1983 over Providencia friedericiana Müller 1983. Int. J. Syst. Bacteriol. 1986; 36:565.
  • ❗ Providencia friedericiana 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 Providencia.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — 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.
  • 🎓 Name mentioned 0 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 the species itself.

Parent taxon: Providencia Ewing 1962 (Approved Lists 1980)

Assigned by: Müller HE. Providencia friedericiana, a new species isolated from penguins. Int. J. Syst. Bacteriol. 1983; 33:709-715.

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Record number: 779887