The
International Code of Nomenclature for Cultivated Plants (
ICNCP,
Cultivated Plant Code) regulates the names of
cultigens (plants whose origin or selection is primarily due to intentional human activity). For the most part, these are plants with names in the classification categories
cultivar,
Group and
grex, the classification categories within the scope of the
ICNCP (as specified in the 2009 version).