International Code of Nomenclature for Cultivated Plants

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The International Code of Nomenclature for Cultivated Plants (ICNCP) regulates the naming of cultivars, cultivar Groups and graft-chimaeras. 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.

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