Name: Alkalihalobacillus hwajinpoensis (Yoon et al. 2004) Patel and Gupta 2020

Category: Species

Proposed as: comb. nov.

Basonym: Bacillus hwajinpoensis Yoon et al. 2004

Etymology: hwa.jin.po.en’sis. N.L. masc. adj. hwajinpoensis, of Hwajinpo, a beach of the East Sea in Korea, where the type strain was isolated [probably better: hwajinponensis]

Pronunciation, gender: hwa-jin-po-EN-sis, masculine

Type strain: DSM 16206; JCM 11807; KCCM 41641; LMG 24749; SW-72

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF541966 Analyse FASTA

Valid publication: Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov. Int J Syst Evol Microbiol 2020; 70:406-438.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 1 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:2167-2173.

Nomenclatural status: validly published under the ICNP

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

Correct name: Pseudalkalibacillus hwajinpoensis (Yoon et al. 2004) Joshi et al. 2022

• Synonyms:

  • Name	Kind
    "Pseudalkalibacillus macyae" (Santini et al. 2004) Joshi et al. 2021	heterotypic synonym, not validly published
    "Anaerobacillus macyae" (Santini et al. 2004) Zavarzina et al. 2009	heterotypic synonym, not validly published
    Bacillus macyae Santini et al. 2004	heterotypic synonym, validly published under the ICNP
    Alkalihalobacillus macyae (Santini et al. 2004) Patel and Gupta 2020	heterotypic synonym, validly published under the ICNP
    Guptibacillus hwajinpoensis (Yoon et al. 2004) Bello et al. 2025	homotypic synonym, validly published under the ICNP
    Bacillus hwajinpoensis Yoon et al. 2004	homotypic synonym, validly published under the ICNP
    Pseudalkalibacillus hwajinpoensis (Yoon et al. 2004) Joshi et al. 2022	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of "Anaerobacillus macyae" (Santini et al. 2004) Zavarzina et al. 2009. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757.
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of Alkalihalobacillus macyae (Santini et al. 2004) Patel and Gupta 2020. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757.
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of Bacillus macyae Santini et al. 2004. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757.
  • ⏰ According to Bello et al. (2025), this species is an earlier heterotypic synonym of "Pseudalkalibacillus macyae" (Santini et al. 2004) Joshi et al. 2021. Publication: Bello S, Rudra B, Schellhorn HE. Phylogenomic studies and molecular markers clarifying the evolutionary relationships and classification of Pseudalkalibacillus species: proposal for the family Guptibacillaceae fam. nov. harbouring the genera Guptibacillus gen. nov. and Exobacillus gen. nov. Int J Syst Evol Microbiol 2025; 75:6757.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 5 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6824.
  • ❗ Alkalihalobacillus hwajinpoensis 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 Alkalihalobacillus.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🙅 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: Alkalihalobacillus Patel and Gupta 2020

Assigned by: Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov. Int J Syst Evol Microbiol 2020; 70:406-438.

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Record number: 7366