In biology a section (Latin: sectio) is a taxonomic rank that is applied differently in botany and zoology.
See main article: Section (botany). Within flora (plants), 'section' refers to a botanical rank below the genus, but above the species:
Within fauna (animals), 'section' refers to an uncommonly used zoological rank below the order, but above the family:
The rank of Superfamily is commonly adopted instead.
The International Code of Nomenclature for Bacteria states that the Section rank is an informal one, between the subgenus and species (as in botany).