Name: Pseudoflavonifractor Carlier et al. 2010
Category, proposed as: genus, gen. nov.
Etymology: Pseu.do.fla.vo.ni.frac’tor. Gr. masc./fem. adj. pseudês, false; N.L. masc. n. Flavonifractor, a bacterial genus name; N.L. masc. n. Pseudoflavonifractor, a false Flavonifractor
Gender, pronunciation (Latin): masculine (stem: Pseudoflavonifractor-), pse͡u-do-fla-wo-ni-FRAK-tor
Type species: Pseudoflavonifractor capillosus (Tissier 1908) Carlier et al. 2010
Conduct genome-based taxonomy of genus at TYGS
Valid publication:
Carlier JP, Bedora-Faure M, K'ouas G, Alauzet C, Mory F. Proposal to unify Clostridium orbiscindens Winter et al. 1991 and Eubacterium plautii (Seguin 1928) Hofstad and Aasjord 1982, with description of Flavonifractor plautii gen. nov., comb. nov., and reassignment of Bacteroides capillosus to Pseudoflavonifractor capillosus gen. nov., comb. nov. Int J Syst Evol Microbiol 2010; 60:585-590. 
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IJSEM list:
Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 60, part 3 of the IJSEM. Int J Syst Evol Microbiol 2010; 60:1253-1255.
Nomenclatural status: validly published under the ICNP
Taxonomic status: correct name
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Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 6
| Name | Nomenclatural status | Taxonomic status |
|---|---|---|
| Pseudoflavonifractor capillosus (Tissier 1908) Carlier et al. 2010 | validly published under the ICNP | correct name |
| Pseudoflavonifractor gallinarum Zenner et al. 2021 | validly published under the ICNP | correct name |
| Pseudoflavonifractor hominis Liu et al. 2022 | validly published under the ICNP | correct name |
| "Pseudoflavonifractor intestinalis" Huang et al. 2024 | not validly published | preferred name |
| Pseudoflavonifractor intestinihominis Hitch et al. 2025 | validly published under the ICNP | correct name |
| "Pseudoflavonifractor phocaeensis" Ricaboni et al. 2017 | not validly published | preferred name |
Parent taxon: Oscillospiraceae Peshkoff 1940 (Approved Lists 1980)
Assigned by:
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. 🇩🇪
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