||The examples and perspective in this article may not include all significant viewpoints. (May 2010)|
In botanical nomenclature, a hybrid may be given a hybrid name, which is a special kind of botanical name. The International Code of Nomenclature for algae, fungi, and plants provides the following options in dealing with a hybrid:
- 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 can be indicated by:
- a multiplication sign "×" placed before the name of an intergeneric hybrid, or before the epithet of a species hybrid, e.g.:
- or by the prefix notho- attached to the rank,
- Crataegus nothosect. Crataeguineae
- Iris germanica nothovar. florentina.
The provisions in the ICN that deal with hybrid names are Articles H.1 to H.12.
A hybrid name is treated like other botanical names, for most purposes. The multiplication sign is not part of the actual name and is to be 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.
A hybrid name does not necessarily refer to a morphologically distinctive group, but applies to all progeny of the parents, no matter how much the variation. So, 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. This covers quite a range in flower colour.
The names of intergeneric hybrids have a special form called a condensed formula. The provisions in the ICN that deal with condensed formulae are Articles H.6 to H.9.
- Grex (horticulture), different rules for naming orchid hybrids
- graft-chimaera names look similar, but use an addition sign "+".
- McNeill, J.; Barrie, F.R.; Buck, W.R.; Demoulin, V.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Marhold, K.; Prado, J.; Prud'homme Van Reine, W.F.; Smith, G.F.; Wiersema, J.H.; Turland, N.J. (2012). International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Regnum Vegetabile 154. A.R.G. Gantner Verlag KG. ISBN 978-3-87429-425-6.