Type specimen
One particular type specimen may have any number of scientific names attached to it. For example the names Fabaceae (family), Faboideae (subfamily), and Faba (genus) all have the same specimen as the type. For any one circumscription, position, and rank of a taxon only one name can be correct (for a genus that includes the type specimens of the names Vicia and Faba, both, the correct name will be Vicia).