Name: Corynebacterium flaccumfaciens subsp. poinsettiae (Starr and Pirone 1942) Carlson and Vidaver 1982

Category: Subspecies

Proposed as: comb. nov.

Basonym: "Phytomonas poinsettiae" Starr and Pirone 1942

Etymology: poin.set’ti.ae. N.L. gen. fem. n. poinsettiae, of Poinsettia, a genus of flowering plants

Gender: neuter

Type strain: ATCC 9682; CFBP 2403; CIP 107084; DSM 20149; ICMP 2566; LMG 3715; NCPPB 854

16S rRNA gene: AM410687 Analyse FASTA

Valid publication: Carlson RR, Vidaver AK. Taxonomy of Corynebacterium plant pathogens, including a new pathogen of wheat, based on polyacrylamide gel electrophoresis of cellular proteins. Int. J. Syst. Bacteriol. 1982; 32:315-326.

Nomenclatural status: validly published under the ICNP

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

Correct name: Curtobacterium flaccumfaciens (Hedges 1922) Collins and Jones 1984

• Synonyms:

  • Name	Kind
    "Bacterium flaccumfaciens" Hedges 1922	heterotypic synonym, not validly published, basonym of name in Approved Lists, distinct rank
    Corynebacterium flaccumfaciens (Hedges 1922) Dowson 1942 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP, distinct rank
    Corynebacterium oortii Saaltink and Maas Geesteranus 1969 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP, distinct rank
    Corynebacterium betae Keyworth et al. 1956 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP, distinct rank
    Corynebacterium flaccumfaciens subsp. betae (Keyworth et al. 1956) Carlson and Vidaver 1982	heterotypic synonym, validly published under the ICNP
    Corynebacterium flaccumfaciens subsp. oortii (Saaltink and Maas Geesteranus 1969) Carlson and Vidaver 1982	heterotypic synonym, validly published under the ICNP
    "Curtobacterium poinsettiae" (Starr and Pirone 1942) Osdaghi et al. 2024	homotypic synonym, not validly published, distinct rank
    Curtobacterium flaccumfaciens (Hedges 1922) Collins and Jones 1984	heterotypic synonym, validly published under the ICNP, distinct rank
    Curtobacterium aurantiacum Osdaghi et al. 2025	heterotypic synonym, validly published under the ICNP, distinct rank
    "Phytomonas poinsettiae" Starr and Pirone 1942	homotypic synonym, not validly published, basonym of name in Approved Lists, distinct rank
    Corynebacterium poinsettiae (Starr and Pirone 1942) Burkholder 1948 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Corynebacterium flaccumfaciens subsp. poinsettiae 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 Corynebacterium flaccumfaciens within a separate genus Corynebacterium.
  • 😷 The taxon name shown here has no risk group assigned, but is the homotypic synonym of Corynebacterium poinsettiae (Starr and Pirone 1942) Burkholder 1948 (Approved Lists 1980), which has a risk group (Swiss Confederation) above 1. This may require that the name shown here is not treated as the correct name for practical purposes.
  • 🙅 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 species itself.

Parent taxon: Corynebacterium flaccumfaciens (Hedges 1922) Dowson 1942 (Approved Lists 1980)

Assigned by: Carlson RR, Vidaver AK. Taxonomy of Corynebacterium plant pathogens, including a new pathogen of wheat, based on polyacrylamide gel electrophoresis of cellular proteins. Int. J. Syst. Bacteriol. 1982; 32:315-326.

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Record number: 798134