Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+MedendemicA,B,C: AlgerianativeB; BalearesnativeB (MallorcanativeA); MorocconativeB; PortugalnativeB,D,E; SardinianativeB; Spain, with Gibraltar and AndorranativeB,E (SpainnativeA,C)
Bibliography
A.Bolòs, O. de, Vigo Bonada, J., Masalles, R. M. & Ninot, J. M. 1990: Flora manual dels països catalans. – Barcelona
B.Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin
C.Valdés, B. 1987: Flora Vascular de Andalucía Occidental 2
D.Franco & J. do Amaral 1984: Nova flora de Portugal (continente e Açores) 2. – Lisboa
E.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