Name: Branhamella catarrhalis (Frosch and Kolle 1896) Catlin 1970 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Mikrokokkus catarrhalis" Frosch and Kolle 1896

Etymology: ca.tar.rha’lis. L. masc. n. catarrhus, a flowing down, the catarrh, rheum; L. masc./fem. adj. suff. -alis, suffix denoting pertaining to; N.L. fem. adj. catarrhalis, pertaining to a catarrh

Pronunciation (Latin), gender: … ka-tar-R^HA-lis, feminine

Type strain: ATCC 25238; CCUG 353; CIP 73.21; DSM 9143; LMG 5128; NCTC 11020; Ne 11

Conduct genome-based taxonomy at

16S rRNA gene: AF005185 Analyse FASTA

Effective publication: Catlin BW. Transfer of the organism named Neisseria catarrhalis to Branhamella gen. nov. International Journal of Systematic Bacteriology 1970; 20:155-159.

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 (and not recommended for medical use)

Correct name: Moraxella catarrhalis (Frosch and Kolle 1896) Henriksen and Bøvre 1968 (Approved Lists 1980)

Risk group: 2

• Synonyms:

  • Name	Kind
    "Mikrokokkus catarrhalis" Frosch and Kolle 1896	homotypic synonym, not validly published, basonym of name in Approved Lists
    Moraxella veridica Nguyen et al. 2025	heterotypic synonym, validly published under the ICNP
    Moraxella catarrhalis (Frosch and Kolle 1896) Henriksen and Bøvre 1968 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Branhamella Catlin 1970 (Approved Lists 1980). Publication: Catlin BW. Transfer of the organism named Neisseria catarrhalis to Branhamella gen. nov. International Journal of Systematic Bacteriology 1970; 20:155-159.
  • ⏰ According to Committee (2025), this species is an earlier heterotypic synonym of Moraxella veridica Nguyen et al. 2025. Publication: Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
  • ❗ Branhamella catarrhalis 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 Branhamella.
  • 😷 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". — 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 1044 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: Branhamella Catlin 1970 (Approved Lists 1980)

Assigned by: Catlin BW. Transfer of the organism named Neisseria catarrhalis to Branhamella gen. nov. International Journal of Systematic Bacteriology 1970; 20:155-159.

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Record number: 774167