Name: Trichococcus flocculiformis Scheff et al. 1984

Category: Species

Proposed as: sp. nov.

Etymology: floc.cu.li.for’mis. L. masc. n. floccus, a flock of wool; L. masc. n. flocculus, like a small floc of wool; L. masc./fem. adj. suff. -formis, -like, in the shape of; from L. fem. n. forma, figure, shape, appearance; N.L. masc. adj. flocculiformis, small-floc-shaped

Pronunciation, gender: flok-ku-li-FOR-mis, masculine

Type strain: ATCC 51221; DSM 2094; Echt

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y17301 Analyse FASTA

Effective publication: Scheff G, Salcher O, Lingens F. Trichococcus flocculiformis gen. nov. sp. nov. A new gram-positive filamentous bacterium isolated from bulking sludge. Appl. Microbiol. Biotechnol. 1984; 19:114-119.

IJSEM list: Anonymous. Validation list no. 15. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1984; 34:355-357.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Emendations:
  • Liu et al. 2002 Liu JR, Tanner RS, Schumann P, Weiss N, McKenzie CA, Janssen PH, Seviour EM, Lawson PA, Allen TD, Seviour RJ. Emended description of the genus Trichococcus, description of Trichococcus collinsii sp. nov., and reclassification of Lactosphaera pasteurii as Trichococcus pasteurii comb. nov. and of Ruminococcus palustris as Trichococcus palustris comb. nov. in the low-G+C gram-positive bacteria. Int J Syst Evol Microbiol 2002; 52:1113-1126. Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 52, part 4 of the IJSEM. Int J Syst Evol Microbiol 2002; 52:1439-1440.

• Notes:
  • 🥇 Nomenclatural type of the genus Trichococcus Scheff et al. 1984. Publication: Scheff G, Salcher O, Lingens F. Trichococcus flocculiformis gen. nov. sp. nov. A new gram-positive filamentous bacterium isolated from bulking sludge. Appl. Microbiol. Biotechnol. 1984; 19:114-119.
  • 😷 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 9 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 pathogenicity of other species in the genus.

Parent taxon: Trichococcus Scheff et al. 1984

Assigned by: Scheff G, Salcher O, Lingens F. Trichococcus flocculiformis gen. nov. sp. nov. A new gram-positive filamentous bacterium isolated from bulking sludge. Appl. Microbiol. Biotechnol. 1984; 19:114-119.

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Record number: 782847