Name: Conchiformibius steedae corrig. (Kuhn and Gregory 1979) Xie and Yokota 2005

Category: Species

Proposed as: comb. nov.

Basonym: Simonsiella steedae Kuhn and Gregory 1979 (Approved Lists 1980)

Etymology: steed’ae. N.L. gen. fem. n. steedae, of Steed, named for Pamela D. M. Steed Glaister, who first isolated axenic cultures of Simonsiella and erected the family Simonsiellaceae

Gender: masculine

Type strain: ATCC 27409; DSM 2580; IAM 14972; JCM 21443; NBRC 102457

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB087261 Analyse FASTA

Effective publication: Xie CH, Yokota A. Phylogenetic analysis of Alysiella and related genera of Neisseriaceae: proposal of Alysiella crassa comb. nov., Conchiformibium steedae gen. nov., comb. nov., Conchiformibium kuhniae sp. nov. and Bergeriella denitrificans gen. nov., comb. nov. J Gen Appl Microbiol 2005; 51:1-10.

IJSEM list: Euzeby JP. Validation list no. 104. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2005; 55:1395-1397.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Simonsiella steedae Kuhn and Gregory 1979 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Conchiformibium steedae (Kuhn and Gregory 1979) Xie and Yokota 2005	other spelling of name, inaccurate spelling

• Notes:
  • 🥇 Nomenclatural type of the genus Conchiformibius corrig. Xie and Yokota 2005. Publication: Xie CH, Yokota A. Phylogenetic analysis of Alysiella and related genera of Neisseriaceae: proposal of Alysiella crassa comb. nov., Conchiformibium steedae gen. nov., comb. nov., Conchiformibium kuhniae sp. nov. and Bergeriella denitrificans gen. nov., comb. nov. J Gen Appl Microbiol 2005; 51:1-10.
  • 😷 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 Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — 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 0 times in PubMed until 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.
  • 🧍 In the effective publication the basonym is erroneously cited as Simonsiella steedae Kuhn and Gregory 1978 (sic) (Approved Lists 1980). — 🧍 The original spelling Conchiformibium (sic) steedae, has been corrected on validation. Publication: Euzeby JP. Validation list no. 104. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2005; 55:1395-1397.

Parent taxon: Conchiformibius corrig. Xie and Yokota 2005

Assigned by: Xie CH, Yokota A. Phylogenetic analysis of Alysiella and related genera of Neisseriaceae: proposal of Alysiella crassa comb. nov., Conchiformibium steedae gen. nov., comb. nov., Conchiformibium kuhniae sp. nov. and Bergeriella denitrificans gen. nov., comb. nov. J Gen Appl Microbiol 2005; 51:1-10.

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Record number: 775088