Ferula cassii Zohary & P. H. Davis in Kew Bull. 1947: 90. 1947 Ferula cassii Zohary & P. H. Davis in Kew Bull. 1947: 90. 1947Taxon for this nameFerula cassii Zohary & P. H. Davis in Kew Bull. 1947: 90. 1947