Back Grupa kultivara BS Grup cultivar Catalan Kultivargruppe Danish Gruppe (Botanik) German Grupo de cultivares Spanish گروه رقمی کشاورزی Persian Groupe de cultivars French Kelompok budidaya ID Топтастыру Kazakh Groep (ICNCP) Dutch
A Group[1] (previously cultivar-group[2]) is a formal category in the International Code of Nomenclature for Cultivated Plants (ICNCP) used for cultivated plants (cultivars) that share a defined characteristic.[1] It is represented in a botanical name by the symbol Group or Gp. "Group" or "Gp" is always written with a capital G in a botanical name, or epithet.[a] The Group is not italicized in a plant's name.[1] The ICNCP introduced the term and symbol "Group" in 2004, as a replacement for the lengthy and hyphenated "cultivar-group", which had previously been the category's name since 1969. For the old name "cultivar-group", the non-standard abbreviation cv. group or cv. Group is also sometimes encountered.[3] There is a slight difference in meaning, since a cultivar-group was defined to comprise cultivars,[2] whereas a Group may include individual plants.[1] The cultivar-groups, in turn, replaced the similar category convariety (convar.), which did not necessarily contain named varieties.[4]
The ICNCP distinguishes between the terms "group" and "Group", a "group" being "an informal taxon not recognized in the ICBN", while a "Group" is the formal taxon defined by the ICNCP (see above).[5]
This categorization does not apply to plant taxonomy generally, only to horticultural and agricultural contexts. Any given Group may have a different taxonomic classification, such as a subspecific name (typically a form or variety name, given in italics) after the genus and species.
A Group is usually united by a distinct common trait, and often includes members of more than one species within a genus.[6] For example, early flowering cultivars in the genus Iris form the Iris Dutch Group. A plant species that loses its taxonomic status in botany, but still has agricultural or horticultural value, meets the criteria for a cultivar group, and its former botanical name can be reused as the name of its cultivar group. For example, Hosta fortunei is usually no longer recognized as a species, and the ICNCP states that the epithet fortunei can be used to form Hosta Fortunei Group.[1]
- ^ a b c d e Brickell, C. D.; et al., eds. (2009). "International Code of Nomenclature for Cultivated Plants" (PDF). Scripta Horticulturae. 10 (8th ed.). International Society of Horticultural Science: 1–184. ISBN 978-0-643-09440-6.
Art. 3.1: "The formal category which may comprise cultivars, individual plants or combinations thereof on the basis of defined character-based similarity is the Group"; Glossary: "Group - a formal category denoting an assemblage of cultivars, individual plants, or assemblages of plants on the basis of defined similarity"
- ^ a b International Code of Nomenclature for Cultivated Plants, 4th edition (1969), 5th edition (1980) and 6th edition (1995)
- ^ CABI's Plantwise database, for example, uses "cv. group".
- ^ https://vcru.wisc.edu/spoonerlab/pdf/Spooner%20et%20al.,%20taxonomy%20paper.pdf
- ^ Brickell, C. D.; et al., eds. (2009). "International Code of Nomenclature for Cultivated Plants" (PDF). Scripta Horticulturae. 10 (8th ed.). International Society of Horticultural Science: 143. ISBN 978-0-643-09440-6.
- ^ "Groups". HorTax.org. HorTax: Cultivated Plant Taxonomy Group. Archived from the original on 2 July 2017. Retrieved 19 July 2016.
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