International Committee on Systematics of Prokaryotes

The International Committee on Systematics of Prokaryotes (ICSP), formerly the International Committee on Systematic Bacteriology (ICSB), is the body that oversees the nomenclature of prokaryotes, determines the rules by which prokaryotes are named and whose Judicial Commission issues Opinions concerning taxonomic matters, revisions to the Bacteriological Code, etc.

The ICSP consists of an executive board, the members of a decision-making committee (judicial commission) and members elected from member societies of the International Union of Microbiological Societies (IUMS). In addition, the ICSP has a number of subcommittees dealing with issues regarding the nomenclature and taxonomy of specific groups of prokaryotes.

The ICSP has a number of subcommittees dealing with issues regarding the nomenclature and taxonomy of specific groups of prokaryotes. These include the following: Aeromonadaceae, Vibrionaceae and related organisms; Genera Agrobacterium and Rhizobium; Bacillus and related organisms; Bifidobacterium, Lactobacillus and related organisms; Genus Brucella; Burkholderia, Ralstonia and related organisms; Campylobacter and related bacteria; Clostridia and Clostridium-like organisms; Comamonadaceae and related organisms; Family Enterobacteriaceae; Flavobacterium- and Cytophaga-like bacteria; Gram-negative anaerobic rods; Family Halobacteriaceae; Family Halomonadaceae; Genus Leptospira; Genus Listeria; Methanogens; Suborder Micrococcineae; Families Micromonosporaceae, Streptosporangiaceae and Thermomonosporaceae; Class Mollicutes; Genus Mycobacterium; Nocardia and related organisms; Family Pasteurellaceae; Photosynthetic prokaryotes; Pseudomonas, Xanthomonas and related organisms; Suborder Pseudonocardineae; Staphylococci and and Family Streptomycetaceae.

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