Name: Azomonotrichon macrocytogenes (Jensen 1955) Thompson and Skerman 1981

Category: Species

Proposed as: comb. nov.

Basonym: Azotobacter macrocytogenes Jensen 1955 (Approved Lists 1980)

Etymology: ma.cro.cy.to.ge.nes. Gr. masc. adj. makros, length, large; Gr. neut. n. kytos, hollow, vessel, jar and, in biology, a cell; Gr. suff. -genes, producing; from Gr. ind. v. gennaô, to produce; N.L. part. adj. macrocytogenes, large cell producing

Gender: feminine

Type strain: ATCC 12335; CIP 103928; DSM 721; LMG 1266; NCAIM B.01790; NCIB 8700; NCIMB 8700; O of Jensen; WR 111

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EF100146 Analyse FASTA

Effective publication: Thompson JP, Skerman VBD. Azotobacteraceae: the taxonomy and ecology of the aerobic nitrogen-fixing bacteria. Academic Press, London, 1979.

IJSEM list: Anonymous. Validation list no. 6. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1981; 31:215-218.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Azomonas macrocytogenes (Jensen 1955) New and Tchan 1982

Risk group: 1

• Synonyms:

  • Name	Kind
    Azotobacter macrocytogenes Jensen 1955 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Azomonas macrocytogenes (Jensen 1955) New and Tchan 1982	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Azomonotrichon Thompson and Skerman 1981. Publication: Thompson JP, Skerman VBD. Azotobacteraceae: the taxonomy and ecology of the aerobic nitrogen-fixing bacteria. Academic Press, London, 1979.
  • ❗ Azomonotrichon macrocytogenes 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 Azomonotrichon.
  • 😷 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.
  • 🎓 Name mentioned 0 times in PubMed until 2024-03-28.

Parent taxon: Azomonotrichon Thompson and Skerman 1981

Assigned by: Thompson JP, Skerman VBD. Azotobacteraceae: the taxonomy and ecology of the aerobic nitrogen-fixing bacteria. Academic Press, London, 1979.

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Record number: 773585