Name: Hungateiclostridium thermocellum (Viljoen et al. 1926) Zhang et al. 2018

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium thermocellum Viljoen et al. 1926 (Approved Lists 1980)

Etymology: ther.mo.cel’lum. Gr. masc. adj. thermos, hot; N.L. neut. n. cellulosum, cellulose; N.L. neut. adj. thermocellum, a thermophile that digests cellulose

Gender: neuter

Type strain: ATCC 27405; DSM 1237; JCM 9322; LMG 10435; NBRC 103400; NRRL B-4536

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB558166 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

Correct name: Acetivibrio thermocellus (Viljoen et al. 1926) Tindall 2019

• Synonyms:

  • Name	Kind
    Clostridium thermocellum Viljoen et al. 1926 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    "Ruminiclostridium thermocellum" (Viljoen et al. 1926) Yutin and Galperin 2013	homotypic synonym, not validly published
    Acetivibrio thermocellus (Viljoen et al. 1926) Tindall 2019	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Hungateiclostridium Zhang et al. 2018. 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.
  • 🎓 Name mentioned 23 times in PubMed until 2024-03-27.
  • 🧍 Hungateiclostridium thermocellum (Viljoen et al. 1926) 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: 798383