A botanical name is the formal scientific name conforming to the International Code of Botanical Nomenclature (ICBN) and, if it concerns a plant cultigen, the additional cultivar and/or group epithets must conform to the International Code of Nomenclature for Cultivated Plants. The botanical names of Australian and imported species of timber and their relationship to trade names are defined in AS 2543 Nomenclature of Australian Timbers and AS 1148 Nomenclature of Commercial Timbers Imported into Australia.