International Code of Botanical Nomenclature

(Saint Louis Code), Electronic version


Article 54

54.1. Consideration of homonymy does not extend to the names of taxa not treated as plants, except as stated below:

(a) Later homonyms of the names of taxa once treated as plants are illegitimate, even though the taxa have been reassigned to a different group of organisms to which this Code does not apply.

(b) A name originally published for a taxon other than a plant, even if validly published under Art. 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45 of this Code, is illegitimate if it becomes a homonym of a plant name when the taxon to which it applies is first treated as a plant (see also Art. 45.4).

Note 1. The International code of nomenclature of bacteria provides that a bacterial name is illegitimate if it is a later homonym of a name of a taxon of bacteria, fungi, algae, protozoa, or viruses.

Recommendation 54A

54A.1 Authors naming new botanical taxa should, as far as is practicable, avoid using such names as already exist for zoological and bacteriological taxa.

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