Term:
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Definition:
A rule stipulated in the International Code of Botanical Nomenclature that states, all other things being equal, that a name published before another name for the same species is the correct name, i.e., it is the valid name.
A rule stipulated in the International Code of Botanical Nomenclature that states, all other things being equal, that a name published before another name for the same species is the correct name, i.e., it is the valid name.