Euro+MedendemicA: France, with Channel is. and Monaco (Francenative ‒ nativeA,B); Italy, with San Marino and Vatican Citynative ‒ nativeA,B; Spain, with Gibraltar and Andorranative ‒ nativeA,B (Spainnative ‒ nativeC)
A.Greuter, W., Burdet, H. M. & Long, G. 1989: Med-Checklist 4. – Genève & Berlin
B.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
C.Castroviejo, S. 2001: Flora Iberica. Plantas vasculares de la Península Ibérica e Islas Baleares. 14
D.anonymous 2010: Anthos. Information System of the plants of Spain. Real Jardín Botánico, CSIC - Fundación Biodiversidad – http://www.anthos.es/