Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+Mednot endemic: ArmenianativeA; Czech RepublicintroducedB,C; France, with Channel is. and MonacocasualD; GeorgianativeE,F; GermanyintroducedG; SlovakiaintroducedB,C; Turkey (Turkey, Asiatic partnativeD)
Bibliography
A.Takhtajan, A. L. 1980: Flora Armenii 7. – Erevan: Armenian Academy of Sciences
B.Dostál, J. 1989: Nová kvetena CSSR 2. – Praha
C.Kubát, K. 1992: Velky klúc na urcovanie vyssích rastlín II
D.Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin
E.Davlianidze, M. T., Gvinisashvili, T., Mukbaniani, M. V., Jinjolia, L. & Jugheli, T. 2018: Nomenclatural Checklist of Flora of Georgia. – Tbilisi: Ilia State University, Institute of Botany