Species "Bacillus inconstans"

Name: "Bacillus inconstans" Ornstein 1920

Category: Species

Proposed as: sp. nov.

Etymology: in.con’stans. L. masc. adj. inconstans, changeable, inconstant, capricious

Pronunciation (Latin), gender: … in-KON-stans, masculine

Nomenclatural type: ATCC 9886; CCUG 6325; CIP 82.90; DSM 30120; JCM 1673; NCTC 10286

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ301684 Analyse FASTA

Original publication: Ornstein M. Zur Bakteriologie des Schmitz-bacillus. Zeitschrift für Hygiene 1920; 91:152-178.

Nomenclatural status: not validly published, basonym of name in Approved Lists

Taxonomic status: synonym (and no standing)

Correct name: Providencia alcalifaciens (de Salles Gomes 1944) Ewing 1962 (Approved Lists 1980)

Risk group: 2

Synonyms:

Name	Kind
"Eberthella alcalifaciens" de Salles Gomes 1944	homotypic synonym, not validly published, basonym of name in Approved Lists
Providencia alcalifaciens (de Salles Gomes 1944) Ewing 1962 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
Proteus inconstans (Ornstein 1920) Shaw and Clarke 1955 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

Notes:
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — 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". — 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.

Parent taxon: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Ornstein M. Zur Bakteriologie des Schmitz-bacillus. Zeitschrift für Hygiene 1920; 91:152-178.

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Record number: 4372

This LPSN page was printed on 2026-02-11 18:32:36