Several names share this combination and are defined under the rules of the botanical code. The species name
Syringa hyacinthiflora
might be an homonymy case.
Syringa × hyacinthiflora Rehder 'Esther Staley'
Syringa hyacinthiflora is the name of a species, part of the genus Syringa.
This species has been described by Rehder 'Esther Staley' under the rules of the International Code of Nomenclature for algae, fungi, and plants (ICN / commonly called the botany code).
Botany
Syringa × hyacinthiflora (Lemoine) Rehd. 'Esther Beauty'
Syringa hyacinthiflora is the name of a species, part of the genus Syringa.
This name is an alternative combination by Rehd. 'Esther Beauty' of an original description of species by Lemoine under the rules of the International Code of Nomenclature for algae, fungi, and plants (ICN / commonly called the botany code)..
Botany