Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+Medendemic: MoldovanativeA,B; Ukraine, with CrimeanativeA,C,D
Bibliography
A.Fedorov, A. A. 1981: Flora partis europaeae URSS 5. – Leningrad
B.Gejdeman, T. S. 1986: Opredelitel' vysših rastenij Moldavskoj SSR, ed. 3. – Kisinev: Shtiintza
C.Mosyakin, S. L. & Fedoronchuk, M. M. 1999: Vascular plants of Ukraine. A nomenclatural checklist. – Kiev: M. G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine
D.Prokudin, J. N. 1987: Opredelitel’ vysših rastenij Ukrainy. – Kiev: Naukova Dumka
