\"An annual index of all new names of succulent plants.\"

Números 7-10 originales publicados en serie: Regnum vegetabile, v. 12, 16, 18, 21

Publicado originalmente: No. 1, [England] : Published for the International Organisation for Succulent Plant Study by the National Cactus and Succulent Society; nos. 2-6, [England] : British Section of the International Organisation for Succulent Plant Study; nos. 8-10, Utrecht : International Bureau for Plant Taxonomy and Nomenclature of the International Association for Plant Taxonomy.