International Code of Nomenclature for Cultivated Plants

ICNCPInternational Code of Nomenclature for Cultivated Plants (ICNCP)selling name
The International Code of Nomenclature for Cultivated Plants (ICNCP), also known as the Cultivated Plant Code, is a guide to the rules and regulations for naming cultigens, plants whose origin or selection is primarily due to intentional human activity.wikipedia
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Cultivar

cultivarsvarietycultivated variety
Cultigens under the purview of the ICNCP include cultivars, Groups (cultivar groups), and grexes.
More generally, cultivar refers to the most basic classification category of cultivated plants in the International Code of Nomenclature for Cultivated Plants (ICNCP).

Cultivar group

Groupcultivar-groupGroups
Cultigens under the purview of the ICNCP include cultivars, Groups (cultivar groups), and grexes.
A Group (previously cultivar-group ) is a formal category in the International Code of Nomenclature for Cultivated Plants (ICNCP) used for cultivated plants (cultivars) that share a defined characteristic.

Grex (horticulture)

grexgregesgrexes
Cultigens under the purview of the ICNCP include cultivars, Groups (cultivar groups), and grexes.
Grex names are one of the three categories of plant names governed by the International Code of Nomenclature for Cultivated Plants; within a grex the cultivar group category can be used to refer to plants by their shared characteristics (rather than by their parentage), and individual orchid plants can be selected (and propagated) and named as cultivars.

Cultigen

cultigenscultural varietyfood cultivation
The International Code of Nomenclature for Cultivated Plants (ICNCP), also known as the Cultivated Plant Code, is a guide to the rules and regulations for naming cultigens, plants whose origin or selection is primarily due to intentional human activity.
Although it is perfectly in order to give a cultigen a botanical name, in any rank desired, now or at any other time, these days it is more common for cultigens to be given names in accordance with the principles, rules and recommendations laid down in the International Code of Nomenclature for Cultivated Plants (ICNCP) which provides for the names of cultigens in three classification categories, the cultivar, the Group (formerly cultivar-group), and the grex.

International Code of Nomenclature for algae, fungi, and plants

ICNrules of botanical nomenclatureInternational Code of Botanical Nomenclature
Taxa that receive a name under the ICNCP will also be included within taxa named under the International Code of Nomenclature for algae, fungi, and plants, for example, a cultivar is a member of a species.
For the naming of cultivated plants there is a separate code, the International Code of Nomenclature for Cultivated Plants, which gives rules and recommendations that supplement the ICN.

William T. Stearn

StearnStearn, William T.William Stearn
William Stearn has outlined the origins of ICNCP, tracing it back to the International Horticultural Congress of Brussels in 1864, when a letter from Alphonse de Candolle to Edouard Morren was tabled.
Stearn then proposed an International Code of Nomenclature for Cultivated Plants (the "Cultivated Code"), producing the first draft that day.

Plant variety (law)

varietiesvarietyplant varieties
Nor does the ICNCP regulate the naming of plant varieties in the legal sense of that term.
taxonomic rank of "variety" (regulated by the International Code of Nomenclature for algae, fungi, and plants), nor with the term "cultivar" (regulated by the International Code of Nomenclature for Cultivated Plants).

Cultivated plant taxonomy

horticultural taxonomyclassification of cultivated plantscultivated
Cultivated plant taxonomy
The provisions of the International Code of Nomenclature for algae, fungi, and plants (Botanical Code) serve primarily scientific ends and the objectives of the scientific community, while those of the International Code of Nomenclature for Cultivated Plants (Cultivated Plant Code) are designed to serve both scientific and utilitarian ends by making provision for the names of plants used in commerce—the cultigens that have arisen in agriculture, forestry and horticulture.

International Cultivar Registration Authority

ICRA
International Cultivar Registration Authority
The ICRA system was established more 50 years ago, and operates under the International Code of Nomenclature for Cultivated Plants (ICNCP), which in turn works with the International Code of Nomenclature for algae, fungi, and plants.

Algae

algaalgalfilamentous algae
All organisms traditionally considered to be plants (including algae and fungi) are included.

Fungus

fungifungalnecrotrophic
All organisms traditionally considered to be plants (including algae and fungi) are included.

Taxon

taxagrouppolytypic
Taxa that receive a name under the ICNCP will also be included within taxa named under the International Code of Nomenclature for algae, fungi, and plants, for example, a cultivar is a member of a species.

Species

specificspecific namespecific epithet
Taxa that receive a name under the ICNCP will also be included within taxa named under the International Code of Nomenclature for algae, fungi, and plants, for example, a cultivar is a member of a species.

Wageningen

Mayor of WageningenWageningen, NetherlandsWageningen, the Netherlands
The first edition of the ICNCP, which was agreed in 1952 in Wageningen and published in 1953, has been followed by seven subsequent editions – in 1958 (Utrecht), 1961 (update of 1958), 1969 (Edinburgh), 1980 (Seattle), 1995 (Edinburgh), 2004 (Toronto) and 2009 (Wageningen).

Alphonse Pyramus de Candolle

A.DC.Alphonse de Candollede Candolle
William Stearn has outlined the origins of ICNCP, tracing it back to the International Horticultural Congress of Brussels in 1864, when a letter from Alphonse de Candolle to Edouard Morren was tabled.

Charles Jacques Édouard Morren

E.MorrenC.MorrenCharles Morren
William Stearn has outlined the origins of ICNCP, tracing it back to the International Horticultural Congress of Brussels in 1864, when a letter from Alphonse de Candolle to Edouard Morren was tabled.

Karl Koch (botanist)

K.KochKarl KochK. Koch
Karl Koch supported this position at the 1865 International Botanical and Horticultural Congress and at the 1866 International Botanical Congress, where he suggested that future congresses should deal with nomenclatural matters.

Hybrid (biology)

hybridhybridshybridization
Magnolia 'Elizabeth': a cultivar within a hybrid between two or more species.

+Crataegomespilus

+''Crataegomespilus+ ''Crataegomespilus
+Crataegomespilus: a graft-chimera of Crataegus and Mespilus

Chimera (genetics)

chimerachimerismchimeric
+Crataegomespilus: a graft-chimera of Crataegus and Mespilus

Crataegus

hawthornhawthornshawberries
+Crataegomespilus: a graft-chimera of Crataegus and Mespilus

Mespilus

medlar
+Crataegomespilus: a graft-chimera of Crataegus and Mespilus

W. Kordes' Söhne

KordesReimer KordesW. Kordes' Sons
Thus the German rose breeder Reimer Kordes registered a white rose in 1958 as the cultivar 'KORbin'.

United Kingdom

British🇬🇧UK
This is sold in the United Kingdom under the selling name "Iceberg", in France as "Fée des Neiges" and in Germany as "Schneewittchen".

Rosa Iceberg

IcebergSchneewittchen
This is sold in the United Kingdom under the selling name "Iceberg", in France as "Fée des Neiges" and in Germany as "Schneewittchen".