Botanical Name - Binary Name

For botanical nomenclature, the ICBN prescribes a two-part name or binary name for any taxon below the rank of genus down to, and including the rank of species. Taxa below the rank of species get a three part (infraspecific name).

The ranks explicitly mentioned in the ICBN as having a binary name are:

• subgenus
• section
• subsection
• series
• subseries
• species

A binary name consists of the name of a genus and an epithet.

• In the case of a species this is a specific epithet:

Bellis perennis is the name of a species, with perennis the specific epithet. There is no connecting term involved, to indicate the rank

• In the case of a subdivision of a genus (subgenus, section, subsection, series, subseries, etc.) the name consists of the name of a genus and a subdivisional epithet. A connecting term should be placed before the subdivisional epithet to indicate the rank.

Paraserianthes sect. Falcataria