Name: Cytophaga hutchinsonii Winogradsky 1929 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: hut.chin.so’ni.i. N.L. gen. masc. n. hutchinsonii, of Hutchinson, named in honor of English microbiologist, H. B. Hutchinson

Pronunciation, gender: hut-k^hin-SO-ni-i, feminine

Type strain: ATCC 33406; CIP 103989; DSM 1761; IFO 15051; JCM 20678; LMG 10844; NBRC 15051; NCIB 9469; NCIMB 9469

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M58768 Analyse FASTA

Effective publication: Winogradsky S. Études sur la microbiologie du sol - sur la dégradation de la cellulose dans le sol. Annales de l'Institut Pasteur (Paris) 1929; 43:549-633.

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: correct name (and explicitly recommended for medical use)

Risk group: 1

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.

• Notes:
  • 🥇 Nomenclatural type of the genus Cytophaga Winogradsky 1929 (Approved Lists 1980). Publication: Winogradsky S. Études sur la microbiologie du sol - sur la dégradation de la cellulose dans le sol. Annales de l'Institut Pasteur (Paris) 1929; 43:549-633.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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 79 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.

Parent taxon: Cytophaga Winogradsky 1929 (Approved Lists 1980)

Assigned by: Winogradsky S. Études sur la microbiologie du sol - sur la dégradation de la cellulose dans le sol. Annales de l'Institut Pasteur (Paris) 1929; 43:549-633.

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Record number: 775394