DIVISION II. RULES AND RECOMMENDATIONS
CHAPTER IV. EFFECTIVE AND VALID PUBLICATION
SECTION 3. AUTHOR CITATIONS
48.1. When an author adopts an existing name but definitely excludes its original type, a later homonym that must be attributed solely to that author is considered to have been published. Similarly, when an author who adopts a name refers to an apparent basionym but explicitly excludes its type, a new name is considered to have been published that must be attributed solely to that author. Exclusion can be effected by simultaneous explicit inclusion of the type in a different taxon by the same author (see also
Ex. 1. Sirodot (1872) placed the type of Lemanea Bory (1808) in
Sacheria Sirodot (1872); hence Lemanea, as treated by Sirodot (1872), is to be cited as
Lemanea Sirodot non Bory and not as Lemanea Bory emend. Sirodot.
Ex. 2. The name Amorphophallus campanulatus Decne. (1834) was apparently based on the illegitimate
Arum campanulatum Roxb. (1819). However, the type of the latter was explicitly excluded by Decaisne, and his name is therefore a legitimate name of a new species, to be attributed solely to him.
Misapplication of a new combination to a different taxon, but without explicit exclusion of the type of the basionym, is dealt with under
Retention of a name in a sense that excludes its original type, or its type designated under
, can be effected only by conservation (see Art.
2006, by International Association for Plant Taxonomy. This page last updated