Name: Faenia rectivirgula (Krassilnikov and Agre 1964) Kurup and Agre 1983

Category: Species

Proposed as: comb. nov.

Basonym: "Thermopolyspora rectivirgula" Krassilnikov and Agre 1964

Etymology: rec.ti.vir’gu.la. L. masc. perf. part. rectus, straight; L. fem. dim. n. virgula, twig; N.L. fem. dim. n. rectivirgula, straight twig

Pronunciation, gender: rek-ti-WIR-gu-la, feminine

Type strain: ATCC 33515; DSM 43747; IFO 12464; INMI 683; JCM 3057; NBRC 12464; NRRL B-16280; VKM Ac-810

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: JN010255 Analyse FASTA

Valid publication: Kurup VP, Agre NS. Transfer of Micropolyspora rectivirgula (Krassilnikov and Agre 1964) Lechevalier, Lechevalier, and Becker 1966 to Faenia gen. nov. Int. J. Syst. Bacteriol. 1983; 33:663-665.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Saccharopolyspora rectivirgula (Krassilnikov and Agre 1964) Korn-Wendisch et al. 1989

Risk group: 2

• Synonyms:

  • Name	Kind
    "Thermopolyspora rectivirgula" Krassilnikov and Agre 1964	homotypic synonym, not validly published, basonym of name in Approved Lists
    Micropolyspora rectivirgula (Krassilnikov and Agre 1964) Prauser and Momirova 1970 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Saccharopolyspora rectivirgula (Krassilnikov and Agre 1964) Korn-Wendisch et al. 1989	homotypic synonym, validly published under the ICNP
    Micropolyspora faeni Cross et al. 1968 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Faenia Kurup and Agre 1983. Publication: Kurup VP, Agre NS. Transfer of Micropolyspora rectivirgula (Krassilnikov and Agre 1964) Lechevalier, Lechevalier, and Becker 1966 to Faenia gen. nov. Int. J. Syst. Bacteriol. 1983; 33:663-665.
  • ⏰ According to Kurup and Agre (1983), this species is an earlier heterotypic synonym of Micropolyspora faeni Cross et al. 1968 (Approved Lists 1980). Publication: Kurup VP, Agre NS. Transfer of Micropolyspora rectivirgula (Krasil'nikov and Agre 1964) Lechevalier, Lechevalier, and Becker 1966 to Faenia gen. nov. Int. J. Syst. Bacteriol. 1983; 33:663-665.
  • ❗ Faenia rectivirgula 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 Faenia.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human and animal pathogen - biological class of risk animal: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1, note = "PIIC". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+". — 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 17 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 Faenia rectivirgula could be regarded as not in accordance with the rules of the ICNP because Faenia Kurup and Agre 1983 could be regarded as not in accordance with the rules of the ICNP. Publication: Oren A, Arahal DR, Goker M, Moore ERB, Rossello-Mora R, Sutcliffe IC. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2022 Revision). Int J Syst Evol Microbiol 2023; 73:5585.

Parent taxon: Faenia Kurup and Agre 1983

Assigned by: Kurup VP, Agre NS. Transfer of Micropolyspora rectivirgula (Krassilnikov and Agre 1964) Lechevalier, Lechevalier, and Becker 1966 to Faenia gen. nov. Int. J. Syst. Bacteriol. 1983; 33:663-665.

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Record number: 776173