The International Code of Nomenclature for Cultivated Plants
) regulates the naming of cultivars
, cultivar Groups
. Examples are
- Clematis alpina 'Ruby' : a cultivar within a species
- Magnolia 'Elizabeth' : a hybrid between at least two species
- Rhododendron boothii Mishmiense Group: a Group name
- +Crataegomespilus : a graft-chimaera of Crataegus and Mespilus.
Note that the ICNCP does not regulate trademarks for plants: trademarks are regulated by the law of the land involved. Nor does the ICNCP regulate the naming of plant varieties.
Orchids have a Code of their own that operates within the limits set by the ICNCP.