The name of a subspecies is a trinomen, a trinomial name, i.e., a name that consists of three names: generic name, specific epithet, and subspecific epithet. The subspecific epithet is written like the specific epithet: without capitalisation but typeset in italics.
- binomial nomenclature
- trinomial nomenclature
- in plants, an infraspecific taxon gets a three part name, a ternary name.