Alkanna sieheana SynonymySource: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Alkanna sieheana Rech. f. in Ann. Naturhist. Mus. Wien 55: 11. 1947ContentDistribution Bibliography Distribution ● Tu(A) Euro+Med endemicA: Turkey (Turkey, Asiatic part nativeA) Bibliography A. Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin