Species Streptococcus lactis

Name: Streptococcus lactis (Lister 1873) Löhnis 1909 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Bacterium lactis" Lister 1873

Etymology: lac’tis. L. gen. neut. n. lactis, of milk

Pronunciation (Latin), gender: strep-to-KOK-kus LAK-tis, masculine

Type strain: ATCC 19435; CCUG 32211; CCUG 7980; CIP 70.56; DSM 20481; HAMBI 1591; JCM 5805; LMG 6890; NBIMCC 4000; NBRC 100933; NCDO 604; NCFB 604; NCIB 6681; NCIMB 6681; NCTC 6681; VKM B-1662

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M58837 Analyse FASTA

Effective publication: Löhnis F. Die Benennung der Milchsäurebakterien. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung II 1909; 22:553-555.

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: synonym (and not recommended for medical use)

Correct name: Lactococcus lactis (Lister 1873) Schleifer et al. 1986

Risk group: 1

Synonyms:

Name	Kind
Lactobacillus xylosus Kitahara 1938 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP
"Bacterium lactis" Lister 1873	homotypic synonym, not validly published, basonym of name in Approved Lists
Lactococcus lactis (Lister 1873) Schleifer et al. 1986	homotypic synonym, validly published under the ICNP
Streptococcus lactis subsp. diacetilactis (ex Matuszewski et al. 1936) Garvie and Farrow 1982	heterotypic synonym, validly published under the ICNP, distinct rank

Notes:
- ⏰ According to Schleifer et al. (1985), this species is an earlier heterotypic synonym of Lactobacillus xylosus Kitahara 1938 (Approved Lists 1980). Publication: Schleifer KH, Kraus J, Dvorak C, Kilpper-Bälz 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. 🇩🇪
- ❗ Streptococcus lactis is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Streptococcus.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "default: 1 Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1; cremoris: 1 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 = "+". — 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 594 times in PubMed until 2026-06-11.
- 🙅 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 species. The name is on LoRN because of the recorded risk group of the genus.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 3
Total number of child taxa: 3

Child taxa:

Name	Nomenclatural status	Taxonomic status
Streptococcus lactis subsp. cremoris (Orla-Jensen 1919) Garvie and Farrow 1982	validly published under the ICNP	synonym
Streptococcus lactis subsp. diacetilactis (ex Matuszewski et al. 1936) Garvie and Farrow 1982	validly published under the ICNP	synonym
Streptococcus lactis subsp. lactis (Lister 1873) Garvie and Farrow 1982	validly published under the ICNP	synonym

Parent taxon: Streptococcus Rosenbach 1884 (Approved Lists 1980)

Assigned by: Löhnis F. Die Benennung der Milchsäurebakterien. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung II 1909; 22:553-555.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.781353Link copied to clipboard

Record number: 781353

This LPSN page was printed on 2026-08-11 14:10:12

Support LPSN

Species Streptococcus lactis