Species inquirenda

In biological classification, a species inquirenda is a species of doubtful identity requiring further investigation.[1] The use of the term in English-language biological literature dates back to at least the early nineteenth century.[2]

The term taxon inquirendum is broader in meaning and refers to an incompletely defined taxon of which the taxonomic validity is uncertain or disputed by different experts or is impossible to identify the taxon. Further characterization is required.

See alsoEdit


  1. ^ "Glossary". International Code of Zoological Nomenclature (4th ed.). International Commission on Zoological Nomenclature. 1999. Retrieved 2010-04-06.
  2. ^ Edwards, Sydenham Teast (1819). The Botanical Register. Vol. 5. London. lacustris. Nuttall gen. 1. 23; (species inquirenda).