Swarthmore College / Botanical Garden Bulletin / /
Organization
Congress / Commission on Nomenclature and Registration / Arthur Hoyt Scott Horticultural Foundation / Committee on Lilacs / Committee on Horticultural Varieties / Nomenclature Committee / American Association of Botanical Gardens and Arboretums / International Cultivar Registration Authority / Scott Foundation / Swarthmore College / /
International Lilac Registrar at Royal Botanical Gardens About the International Cultivar Registration Authority (ICRA) Royal Botanical Gardens is the International Cultivar Registration Authority (ICRA) for lilacs. We