Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+MedendemicA: Italy, with San Marino and Vatican CitynativeA
Bibliography
A.Peruzzi, L. & Passalacqua, N. G. 2008: Taxonomy of Onosma echioides (L.) L. complex (Boraginaceae) based on morphometric analysis. – Botanical journal of the linnean society 157: 763-774
