Source: Raab-Straube, E. von & Henning, T. (2018+): Violaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Euro+Medendemic: Spain, with Gibraltar and AndorranativeA (SpainnativeB)
Bibliography
A.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
B.Castroviejo, S. 1993: Flora Iberica. Plantas vasculares de la Península Ibérica e Islas Baleares. 3