You decide that the taxon Quercus albiniana (C. Jones) G. Smith subsp. tomentosa H. Carlisle sho

step 1 If scientists come up with two names for the same species, how did the taxonomists make the deci

You decide that the taxon Quercus albiniana (C. Jones) G....

Key Concepts

Botanical Nomenclature

Botanical nomenclature is the formal, systematic naming of plants as governed by codes such as the International Code of Nomenclature for algae, fungi, and plants (ICN). It establishes rules for the formation, publication, and citation of plant names, ensuring that each taxon has a unique and universally recognized name. This system includes principles like the use of Latin binomials, priority of publication, and correct author citation, which are all essential for clear communication among botanists.

New Combinations

A new combination in botanical nomenclature occurs when a taxon previously published under one rank or within a different genus is reclassified so that its name is modified (usually by a change in the genus or by elevating or demoting its rank). In such cases, the specific (or infraspecific) epithet is retained and the basionym’s author is placed in parentheses, followed by the name of the person who made the new combination. This concept is critical when taxonomic revisions are made, such as elevating a subspecies to species rank.

Taxonomic Rank Elevation

Taxonomic rank elevation involves changing the rank of a taxon, for example, from a subspecies to a species. When a taxon is raised in rank, its name may change accordingly. In this process, if the epithet used at the lower rank is available and legitimate at the new rank, it is retained in the new combination. This reversal of rank must also be accompanied by the proper adjustment in authorship to reflect the original citation of the lower-ranked name and the authority who made the new combination.

Authorship Citation

Authorship citation in botanical nomenclature assigns credit to the individuals responsible for naming a taxon. When a taxon is reclassified or elevated from an infraspecific rank (such as subspecies) to species level, the author who originally published the epithet in its earlier rank is indicated in parentheses, followed by the author who creates the new combination. This ensures transparency about the taxonomic history and helps trace the nomenclatural changes through the literature.

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