Name: Sphaerotilus natans Kützing 1833 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: na’tans. L. masc. part. adj. natans, swimming

Pronunciation (Latin), gender: … NA-tans, masculine

Type strain: ATCC 13338; DSM 6575; LMG 7172

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: FR749902 Analyse FASTA

Effective publication: Kützing FT. Beitrag zur Kenntnis über die Entstehung und Metamorphose der niedern vegetabilischen Organismen, nebst einer systematischen Zusammenstellung der hierher gehörigen niedern Algenformen. Linnaea 1833; 8:335-387.

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: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Sphaerotilus Kützing 1833 (Approved Lists 1980). Publication: Kützing FT. Beitrag zur Kenntnis über die Entstehung und Metamorphose der niedern vegetabilischen Organismen, nebst einer systematischen Zusammenstellung der hierher gehörigen niedern Algenformen. Linnaea 1833; 8:335-387.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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 115 times in PubMed until 2025-06-04.

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Sphaerotilus natans subsp. natans (Kützing 1833) Gridneva et al. 2011	validly published under the ICNP	correct name
    Sphaerotilus natans subsp. sulfidivorans Gridneva et al. 2011	validly published under the ICNP	correct name

Parent taxon: Sphaerotilus Kützing 1833 (Approved Lists 1980)

Assigned by: Kützing FT. Beitrag zur Kenntnis über die Entstehung und Metamorphose der niedern vegetabilischen Organismen, nebst einer systematischen Zusammenstellung der hierher gehörigen niedern Algenformen. Linnaea 1833; 8:335-387.

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Record number: 780973