Name: Hungateiclostridium clariflavum (Shiratori et al. 2009) Zhang et al. 2018

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium clariflavum Shiratori et al. 2009

Etymology: cla.ri.fla’vum. L. masc. adj. clarus, clear, bright, shining, brilliant; L. neut. adj. flavum, yellow; N.L. neut. adj. clariflavum, bright yellow, the colour of the colonies or pigment

Pronunciation, gender: kla-ri-FLA-wum, neuter

Type strain: DSM 19732; EBR-02E-0045; EBR45; NBRC 101661

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB186359 Analyse FASTA

Valid publication: Zhang X, Tu B, Dai LR, Lawson PA, Zheng ZZ, Liu LY, Deng Y, Zhang H, Cheng L. Petroclostridium xylanilyticum gen. nov., sp. nov., a xylan-degrading bacterium isolated from an oilfield, and reclassification of clostridial cluster III members into four novel genera in a new Hungateiclostridiaceae fam. nov. Int J Syst Evol Microbiol 2018; 68:3197-3211.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 68, part 10 of the IJSEM. Int J Syst Evol Microbiol 2019; 69:10-12.

Nomenclatural status: validly published under the ICNP, illegitimate name

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

Correct name: Acetivibrio clariflavus (Shiratori et al. 2009) Tindall 2019

• Synonyms:

  • Name	Kind
    Clostridium clariflavum Shiratori et al. 2009	homotypic synonym, validly published under the ICNP
    Acetivibrio clariflavus (Shiratori et al. 2009) Tindall 2019	homotypic synonym, validly published under the ICNP

• Notes:
  • 🎓 Name mentioned 6 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 genus.
  • 🧍 Hungateiclostridium clariflavum (Shiratori et al. 2009) Zhang et al. 2018 is illegitimate because its genus name is illegitimate. Publication: Tindall BJ. The names Hungateiclostridium Zhang et al. 2018, Hungateiclostridium thermocellum (Viljoen et al. 1926) Zhang et al. 2018, Hungateiclostridium cellulolyticum (Patel et al. 1980) Zhang et al. 2018, Hungateiclostridium aldrichii (Yang et al. 1990) Zhang et al. 2018, Hungateiclostridium alkalicellulosi (Zhilina et al. 2006) Zhang et al. 2018, Hungateiclostridium clariflavum (Shiratori et al. 2009) Zhang et al. 2018, Hungateiclostridium straminisolvens (Kato et al. 2004) Zhang et al. 2018 and Hungateiclostridium saccincola (Koeck et al. 2016) Zhang et al. 2018 contravene Rule 51b of the International Code of Nomenclature of Prokaryotes and require replacement names in the genus Acetivibrio Patel et al. 1980. Int J Syst Evol Microbiol 2019; 69:3927-3932.

Parent taxon: Hungateiclostridium Zhang et al. 2018

Assigned by: Zhang X, Tu B, Dai LR, Lawson PA, Zheng ZZ, Liu LY, Deng Y, Zhang H, Cheng L. Petroclostridium xylanilyticum gen. nov., sp. nov., a xylan-degrading bacterium isolated from an oilfield, and reclassification of clostridial cluster III members into four novel genera in a new Hungateiclostridiaceae fam. nov. Int J Syst Evol Microbiol 2018; 68:3197-3211.

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Record number: 798370