Name: Lactococcus lactis subsp. cremoris (Orla-Jensen 1919) Schleifer et al. 1986

Category: Subspecies

Proposed as: comb. nov.

Basonym: Streptococcus cremoris Orla-Jensen 1919 (Approved Lists 1980)

Etymology: cre.mo’ris. L. masc. n. cremor, the thick juice obtained from animal or vegetable substances, cream; L. gen. masc. n. cremoris, of cream

Gender: masculine

Type strain: ATCC 19257; CCUG 21953; CIP 102301; DSM 20069; HAMBI 1588; JCM 16167; LMG 6897; NBIMCC 8919; NBRC 100676; NCDO 607; NCFB 607; NCIB 8662; NCIMB 8662

Conduct genome-based taxonomy at

16S rRNA gene: MK330561 Analyse FASTA

Effective publication: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.

IJSEM list: Anonymous. Validation list no. 20. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1986; 36:354-356.

Nomenclatural status: validly published under the ICNP

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

Correct name: Lactococcus cremoris (Orla-Jensen 1919) Li et al. 2021

Risk group: 1

• Synonyms:

  • Name	Kind
    Streptococcus lactis subsp. cremoris (Orla-Jensen 1919) Garvie and Farrow 1982	homotypic synonym, validly published under the ICNP
    Lactococcus cremoris (Orla-Jensen 1919) Li et al. 2021	homotypic synonym, validly published under the ICNP, distinct rank
    Streptococcus cremoris Orla-Jensen 1919 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Lactococcus lactis subsp. cremoris is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Lactococcus lactis within a separate genus Lactococcus.
  • 😷 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, note = "ht+". — 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.
  • 🙅 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 subspecies. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Lactococcus lactis (Lister 1873) Schleifer et al. 1986

Assigned by: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.

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Record number: 777421