Name: Leifsonia flava Cai et al. 2025

Category: Species

Proposed as: sp. nov.

Etymology: fla’va. L. fem. adj. flava, yellow, the yellow color of colonies

Pronunciation (Latin), gender: … FLA-wa, feminine

Type strain: CGMCC 1.15856; DSM 105144; KCTC 39963; SYP-B2174

Conduct genome-based taxonomy at

16S rRNA gene: KY033218 Analyse FASTA

Effective publication: Cai Y, Tao WZ, Ma YJ, Cheng J, Zhang MY, Zhang YX. Leifsonia flava sp. nov., a novel actinobacterium isolated from the rhizosphere of Aquilegia viridiflora. J Microbiol 2018; 56:549-555. 🇨🇳

IJSEM list: Oren A, Göker M. Validation list no. 225. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2025; 75:6863.

Nomenclatural status: validly published under the ICNP, belated name

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

Correct name: Orlajensenia leifsoniae Gtari et al. 2025

• Synonyms:

  • Name	Kind
    Orlajensenia leifsoniae Gtari et al. 2025	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Leifsonia flava 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 Leifsonia.
  • 🎓 Name mentioned 2 times in PubMed until 2025-10-21.
  • 🙅 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 other species in the genus.

Parent taxon: Leifsonia Evtushenko et al. 2000

Assigned by: Cai Y, Tao WZ, Ma YJ, Cheng J, Zhang MY, Zhang YX. Leifsonia flava sp. nov., a novel actinobacterium isolated from the rhizosphere of Aquilegia viridiflora. J Microbiol 2018; 56:549-555. 🇨🇳

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Record number: 67904