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An isonym, in botanical taxonomy, is a name of a
taxon In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ...
that is identical to another designation, and based on the same
type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...
, but published at a different time by different authors. Citation from that source follows: That is, the later isonyms are to be discarded (they are not
botanical name A botanical name is a formal scientific name conforming to the ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultigen, the additional cultivar or cultivar group, Group epithets must conform t ...
s), and only the first one is to be used (though it is not necessarily the accepted name for a taxon). An exception is made for family names that have been conserved; the place of publication listed for those names is considered to be correct and the name valid (and legitimate), even if an earlier publication of the same name is discovered.


See also

* * * , a duplicate of the holotype (not the type of an isonym)


Notes


References

*{{cite book, last=McNeill, first=J., year=2012, collaboration=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. , volume=Regnum Vegetabile 154 , title=International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011 , publisher=A.R.G. Gantner Verlag KG , isbn=978-3-87429-425-6 , url=http://www.iapt-taxon.org/nomen/main.php?page=title, ref={{harvid, McNeill et al., 2012 Botanical nomenclature Taxonomy (biology)