Name: Chromatium violascens Perty 1852 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: vi.o.las’cens. N.L. neut. part. adj. violascens, becoming violet

Pronunciation (Latin), gender: k^hro-MA-ti-um wi-o-LAS-kens, neuter

Type strain: 6111; ATCC 17096; Carmel River; DSM 198; SMG 198

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ224438 Analyse FASTA

Effective publication: Perty M. Zur Kenntnis kleinster Lebensformen I-VIII. Jent and Reinert, Bern, 1852.

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: Thiocystis violascens (Perty 1852) Imhoff et al. 1998

Risk group: 1

• Synonyms:

  • Name	Kind
    Thiocystis violascens (Perty 1852) Imhoff et al. 1998	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Chromatium violascens 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 Chromatium.
  • 😷 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 1 time in PubMed until 2026-06-11.
  • 🧍 The type strain ATCC 17096 has been deaccessioned. — Tang J. Personal communication, 2001-12-20.

Parent taxon: Chromatium Perty 1852 (Approved Lists 1980)

Assigned by: Perty M. Zur Kenntnis kleinster Lebensformen I-VIII. Jent and Reinert, Bern, 1852.

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Record number: 774690