Rule 9b

A later homonym of a name formed under the nomenclatural codes listed inPrinciple 2 cannot be used.

Recommendation 9

To form new prokaryotic names, authors are advised as follows:

1. Names that are very long or difficult to pronounce should be avoided.
2. Names should differ by at least three characters from existing names ofgenera or species within the same genus.
3. Languages other than Latin should be avoided when Latin equivalents exist orcan be constructed by combining Latin word elements. Exceptions include namesderived from local items such as foods, drinks, geographic localities, andother names for which no Latin words exist.
4. Authors should not name organisms after themselves. If names are formed frompersonal names, they should contain only the name of one person. They maycontain the untruncated family and/or first names.
5. All personal genus names should be feminine regardless of the gender identityof the person they commemorate.
6. Names should not be deliberately contentious or abusive of any person, genderor sexual identity, race, religion, political belief, or ideology.
7. Names that include mnemonic cues are preferred because they promote learningand memory.

Rule 24a

Effective publication under the SeqCode means that the name and evidence for thetaxon have been published in a peer-reviewed journal or book.

Rule 26

A name of a new taxon, or a new combination for an existing taxon, is notvalidly published unless the following criteria are met:

1. The name is effectively published under the rules of the SeqCode.
2. The name is registered in the SeqCode Registry, along with mandatory datafields listed below.
3. The type of the taxon is clearly designated. In the case of species orsubspecies, the type sequence is deposited according to Rule 18a and theaccession number cited.
4. The taxonomic rank is designated.
5. The derivation (etymology) of a new name (and if necessary of a newcombination) is given wherein one or more distinguishable roots areidentified. Roots can originate from any language in use or extinct (see alsoRecommendation 9).

Note 1. When a new species or a new combination results in the proposal of anew genus, both the new genus name and the new species name or the newcombination must be validly published. Publication of the new species epithet ornew combination alone does not constitute valid publication of the new genusname.

Note 2. When possible, authors are recommended to include the SeqCodeRegistry identifier in the effective publication.

Note 3. If the information provided in the registration and the effectivepublication differ, the registration is considered definitive.