Hybrid name

In botanical nomenclature, a hybrid may be given a hybrid name, which is a special kind of botanical name, but there is no requirement that a hybrid name should be created for plants that are believed to be of hybrid origin. The International Code of Nomenclature for algae, fungi, and plants (ICNafp) provides the following options in dealing with a hybrid:A hybrid may get a name if the author considers it necessary, but it is recommended to use parents' names as they are more informative. A hybrid may also be indicated by a formula listing the parents. Such a formula uses the multiplication sign "×" to link the parents. "It is usually preferable to place the names or epithets in a formula in alphabetical order. The direction of a cross may be indicated by including the sexual symbols in the formula, or by placing the female parent first. If a non-alphabetical sequence is used, its basis should be clearly indicated." (H.2A.1) Grex names can be given to orchid hybrids.

Publication of names

Names of hybrids between genera (called nothogenera) can be published by specifying the names of the parent genera, but without a scientific description, and do not have a type. Nothotaxon names with the rank of a subdivision of a genus (notho-subgenus, notho-section, notho-series, etc.) are also published by listing the parent taxa and without descriptions or types. ==Forms of hybrid names==

Forms of hybrid names

A hybrid name can be indicated by: • a multiplication sign "×" placed before the name of an intergeneric hybrid or before the epithet of a species hybrid. An intervening space is optional. e.g.: • × Sorbaronia or ×Sorbaronia is the name of hybrids between the genera Sorbus and Aronia, • Iris × germanica or Iris ×germanica is a species derived by hybrid speciation • or by the prefix notho- attached to the rank (from Ancient Greek , , "bastard") • Crataegus nothosect. Crataeguineae • Iris germanica nothovar. florentina. The multiplication sign and the prefix notho- are not part of the actual name and are disregarded for nomenclatural purposes such as synonymy, homonymy, etc. This means that a taxonomist could decide to use either form of this name: Drosera ×anglica to emphasize that it is a hybrid, or Drosera anglica to emphasize that it is a species. The names of intergeneric hybrids generally have a special form called a condensed formula, e.g., × Agropogon for hybrids between Agrostis and Polypogon. Hybrids involving four or more genera are formed from the name of a person, with suffix -ara, e.g., × Belleara. Names for hybrids between three genera can be either a condensed formula or formed from a person's name with suffix -ara. ==Notation==

Notation

The symbol used to indicate a hybrid is . (Linnaeus originally used , but abandoned it in favour of the multiplication sign.) ==See also==

Source: Wikipedia ↗

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