Name: Polyangium spumosum (ex Krzemieniewska and Krzemieniewski 1927) Brockman 1989

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: spu.mo’sum. L. neut. adj. spumosum, full of foam, foamy

Pronunciation (Latin), gender: po-ly-an-GI-um spu-MO-sum, neuter

Type strain: description in Brockman 1989; DSM 14734; JCM 12638

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: GU207881 Analyse FASTA

Effective publication: Brockman ER. Genus I. Polyangium Link 1809, 42AL. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2159-2162.

IJSEM list: Anonymous. Validation list no. 31. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1989; 39:495-497.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 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 2026-08-13. 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 1 time in PubMed until 2026-06-11.
  • 🧍 According to Yarza et al. (2013), an "un-sequenced orphan species where descriptions, illustrations or dead preserved material serve as the type. Description in Brockman 1989.". Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪
  • 🧍 In the effective publication by Brockmam 1989, this nomenclatural name is cited as Polyangium spumosum (ex Krzemieniewska and Krzemieniewski 1930) Brockman 1989. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Parent taxon: Polyangium Link 1809 (Approved Lists 1980)

Assigned by: Brockman ER. Genus I. Polyangium Link 1809, 42AL. In: Staley JT, Bryant MP, Pfennig N, Holt JG (eds), Bergey's manual of systematic bacteriology, vol. 3., The Williams & Wilkins Co., Baltimore, 1989, p. 2159-2162.

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Record number: 779728