Name: Phaeospirillum molischianum (Giesberger 1947) Imhoff et al. 1998

Category: Species

Proposed as: comb. nov.

Basonym: Rhodospirillum molischianum Giesberger 1947 (Approved Lists 1980)

Etymology: mo.lisch.i.a’num. N.L. neut. adj. molischianum, pertaining to Molisch, named for H. Molisch, an Austrian botanist

Gender: neuter

Type strain: ATCC 14031; DSM 120; LMG 4354

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59067 Analyse FASTA

Valid publication: Imhoff JF, Petri R, Suling J. Reclassification of species of the spiral-shaped phototrophic purple non-sulfur bacteria of the alpha-Proteobacteria: description of the new genera Phaeospirillum gen. nov., Rhodovibrio gen. nov., Rhodothalassium gen. nov. and Roseospira gen. nov. as well as transfer of Rhodospirillum fulvum to Phaeospirillum fulvum comb. nov., of Rhodospirillum molischianum to Phaeospirillum molischianum comb. nov., of Rhodospirillum salinarum to Rhodovibrio salexigens. Int J Syst Bacteriol 1998; 48:793-798.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 48, part 3 of the IJSB. Int J Syst Bacteriol 1998; 48:1085-1087.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Magnetospirillum molischianum (Giesberger 1947) Hördt et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Magnetospirillum molischianum (Giesberger 1947) Hördt et al. 2020	homotypic synonym, validly published under the ICNP
    Rhodospirillum molischianum Giesberger 1947 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • ❗ Phaeospirillum molischianum 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 Phaeospirillum.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 18 times in PubMed until 2024-03-27.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020). Publication: Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.

Parent taxon: Phaeospirillum Imhoff et al. 1998

Assigned by: Imhoff JF, Petri R, Suling J. Reclassification of species of the spiral-shaped phototrophic purple non-sulfur bacteria of the alpha-Proteobacteria: description of the new genera Phaeospirillum gen. nov., Rhodovibrio gen. nov., Rhodothalassium gen. nov. and Roseospira gen. nov. as well as transfer of Rhodospirillum fulvum to Phaeospirillum fulvum comb. nov., of Rhodospirillum molischianum to Phaeospirillum molischianum comb. nov., of Rhodospirillum salinarum to Rhodovibrio salexigens. Int J Syst Bacteriol 1998; 48:793-798.

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Record number: 779444