Name: Propionibacterium lymphophilum (Torrey 1916) Johnson and Cummins 1972 (Approved Lists 1980)

Category: Species

Proposed as: comb. nov.

Basonym: "Bacillus lymphophilus" Torrey 1916

Etymology: lym.pho’phi.lum. L. fem. n. lympha, water, clear water, and in biology lymph; N.L. neut. adj. suff. -philum, friend, loving; from Gr. neut. adj. philon, friend; N.L. neut. adj. lymphophilum, lymph-loving

Pronunciation (Latin), gender: … lym-P^HO-p^hi-lum, neuter

Type strain: ATCC 27520; CCUG 27816; CIP 103263; DSM 4903; JCM 5829; LMG 16728; NCTC 11866; VPI 7625B

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ003056 Analyse FASTA

Effective publication: Johnson JL, Cummins CS. Cell wall composition and deoxyribonucleic acid similarities among the anaerobic coryneforms, classical propionibacteria, and strains of Arachnia propionica. J Bacteriol 1972; 109:1047-1066.

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: Propionimicrobium lymphophilum (Torrey 1916) Stackebrandt et al. 2002

Risk group: 2

• Synonyms:

  • Name	Kind
    "Bacillus lymphophilus" Torrey 1916	homotypic synonym, not validly published, basonym of name in Approved Lists
    Propionimicrobium lymphophilum (Torrey 1916) Stackebrandt et al. 2002	homotypic synonym, validly published under the ICNP

• Emendations:
  • Nouioui et al. 2018 Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.
    Notes:
    • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project.

• Notes:
  • ❗ Propionibacterium lymphophilum 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 Propionibacterium.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — 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 1 time in PubMed until 2025-06-04.
  • 🙅 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 species itself.

Parent taxon: Propionibacterium Orla-Jensen 1909 (Approved Lists 1980)

Assigned by: Johnson JL, Cummins CS. Cell wall composition and deoxyribonucleic acid similarities among the anaerobic coryneforms, classical propionibacteria, and strains of Arachnia propionica. J Bacteriol 1972; 109:1047-1066.

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Record number: 779829