Hybrid name (botany)

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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.[1] The International Code of Nomenclature for algae, fungi, and plants provides the following options in dealing with a hybrid:[2]

  • A hybrid may get a name; this will usually be the option of choice for naturally occurring hybrids.
  • A hybrid may also be indicated by a formula listing the parents. Such a formula uses the multiplication sign "×" to link the parents.

A hybrid name is treated like other botanical names, for most purposes, but differs in that:[2]

  • A hybrid name does not necessarily refer to a morphologically distinctive group, but applies to all progeny of the parents, no matter how much they vary.
    • E.g., Magnolia ×soulangeana applies to all progeny from the cross Magnolia denudata × Magnolia liliiflora, and from the crosses of all their progeny, as well as from crosses of any of the progeny back to the parents (backcrossing). This covers quite a range in flower colour.
  • 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.[3]
  • Special rules apply for forming the names of hybrids between genera or between subdivisions of genera.[4]

Forms of hybrid names[edit]

A hybrid name can be indicated by:

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 attached, e.g., ×Beallara.[4]

See also[edit]

Notes[edit]

  1. ^ (McNeill 2012, Article H.3, Note 1)
  2. ^ a b (McNeill 2012, Articles H.1 to H.12)
  3. ^ (McNeill 2012, Article H.9)
  4. ^ a b (McNeill 2012, Article H.6 and H.7)

References[edit]

External links[edit]