Nomen conservandum

Definition

A scientific name that has been formally protected by a nomenclatural commission to preserve usage despite technical violations of naming rules that would otherwise render it illegitimate. Conservation overrides priority, homonymy, or other Code provisions to maintain nomenclatural stability for well-established names.

Etymology

Latin, literally 'a name to be conserved'

Example

The butterfly family name Nymphalidae was conserved as a nomen conservandum over the technically senior but unused name Sematuridae, preserving a century of literature and preventing disruptive replacement.

Synonyms

• conserved name

Related Terms

• Nomen oblitum
• nomen protectum
• Nomen novum
• principle of priority
• International Code of Zoological Nomenclature
• homonym
• valid name

Usage Notes

In zoology, the International Code of Zoological Nomenclature (ICZN) uses 'conserved name' in English rather than the Latin form, though 'nomen conservandum' appears in older literature and formal Commission rulings. Botany and mycology under the ICN explicitly use 'nomen conservandum' for both the procedure and the resulting name. Conservation requires a formal ruling by the relevant commission and is distinct from suppression of competing names (nomen oblitum) or replacement of invalid names (nomen novum). The plural 'nomina conservanda' is standard in formal taxonomic works.