Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+Medendemic: BulgarianativeA,B,C,D; France, with Channel is. and MonaconativeB; GreecenativeB,D; Spain, with Gibraltar and AndorranativeB,D; Turkey (Turkey, Asiatic partnativeB)
Bibliography
A.Andreev, N. , Ančev, M. , Kožuharov, S. I. , Markova, M. , Peev, D. & Petrova, A. 1992: Opredelitel na visšite rastenija v Bălgarija. – Sofija: Nauka i izkustvo
B.Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin
C.Jordanov, D. 1989: Flora na Narodna Republika Bălgarija 9. – Sofija
D.Tutin, T. G., Heywood, V. H., Burges, N. A., Valentine, D. H., Walters, S. M. & Webb, D. A. 1964–1980: Flora europaea 1-5. – Cambridge: Cambridge University Press
