Name: Hyphomicrobium neptunium Leifson 1964 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: nep.tu’ni.um. L. neut. adj. neptunium, of Neptunus, pertaining to Neptunus, god of the sea

Pronunciation, gender: nep-TU-ni-um, neuter

Type strain: 14-15; ATCC 15444; BCRC 10690; CCRC 10690; DSM 5154; IFAM LE-670; IFO 14232; LE 670; NBRC 14232; NCIMB 2023

Conduct genome-based taxonomy at

16S rRNA gene: KF863147 Analyse FASTA

Effective publication: Leifson E. HYPHOMICROBIUM NEPTUNIUM SP. N. Antonie Van Leeuwenhoek 1964; 30:249-256.

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: Hyphomonas neptunia corrig. (Leifson 1964) Moore et al. 1984

Risk group: 1

• Synonyms:

  • Name	Kind
    Hyphomonas neptunia corrig. (Leifson 1964) Moore et al. 1984	homotypic synonym, validly published under the ICNP
    Hyphomonas neptunium (Leifson 1964) Moore et al. 1984	homotypic synonym, inaccurate spelling

• Notes:
  • ❗ Hyphomicrobium neptunium 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 Hyphomicrobium.
  • 😷 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 11 times in PubMed until 2025-06-04.

Parent taxon: Hyphomicrobium Stutzer and Hartleb 1899 (Approved Lists 1980)

Assigned by: Leifson E. HYPHOMICROBIUM NEPTUNIUM SP. N. Antonie Van Leeuwenhoek 1964; 30:249-256.

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Record number: 776978