BasionymAuthor

In botanical and zoological nomenclature, a basionym author refers to the original name-giver of a species, genus, or other taxonomic rank that has been formally described but later synonymized or replaced. The term originates from the Latin *basis*, meaning "foundation," and *nym*, referring to a name. Basionyms are crucial in plant taxonomy, particularly in the context of the International Code of Nomenclature for algae, fungi, and plants (ICN), which governs the naming of these organisms.

When a species is first published, its name is accompanied by the name of the author who described it. If that species is later found to be synonymous with another, the original name remains the basionym, but the new, valid name is assigned based on priority. For example, if *Aster novae-angliae* is later determined to be identical to *Aster scaber*, the basionym would be *Aster novae-angliae* L., with the latter becoming the correct, prioritized name.

The basionym author is typically cited in the original publication, often following the name in parentheses. This citation helps trace the lineage of taxonomic names and ensures consistency in scientific communication. In cases where multiple authors contributed to the description, all names are usually included, though the primary author is often the first listed. Basionyms are particularly important in the study of plant evolution, hybridization, and conservation, as they provide a historical context for taxonomic relationships.