basionym

Etymology
From.

Noun

 * 1)  An earlier valid scientific name of a species that has since been renamed and from which the new name is partially derived.
 * is the basionym of.

Usage notes
The International Code of Botanical Nomenclature includes the following normative definition:
 * A previously published legitimate name-bringing or epithet-bringing synonym from which a new name is formed for a taxon of different rank or position (Art. 33.4, 49.1 and 52.3)

Translations

 * Catalan:
 * Dutch:
 * French:
 * Italian: basionimo
 * Spanish: basiónimo, basónimo