International Code of Nomenclature of Prokaryotes
The International Code of Nomenclature of Prokaryotes (ICNP) or Prokaryotic Code, formerly the International Code of Nomenclature of Bacteria (ICNB) or Bacteriological Code (BC), governs the scientific names for Bacteria and Archaea. It denotes the rules for naming taxa of bacteria, according to their relative rank.
Source: Wikipedia — International Code of Nomenclature of Prokaryotes (CC BY-SA 4.0)