The International Code of Nomenclature for algae, fungi, and plants is the set of rules and recommendations that govern the scientific naming of all organisms traditionally treated as algae, fungi, or plants, whether fossil or non-fossil, including blue-green algae (Cyanobacteria), chytrids, oomycetes, slime moulds, and photosynthetic protists with their taxonomically related non-photosynthetic groups (but excluding Microsporidia).
The current version of the code is the Madrid Code adopted by the International Botanical Congress held in Madrid, Spain, in July 2024. As with previous codes, it took effect as soon as it was ratified by the congress upon acceptance of the resolution at the closing plenary session of the XX IBC on 27 July 2024.
The electronic version of the ICN will be available online in the website of the International Association of Plant Taxonomy.
The Spanish authorized translation of the Madrid by Werner Greuter, Rosa Rankin Rodríguez, Juan Carlos Zamora Señoret y Luis Alberto Parra Sanchez was published as "Occasional paper from the Herbarium Greuter – 6" and is available here.
The previous, intermediate, version is available here as PDF Version.