Euro+MedendemicA,B,C: CorsicanativeA,B,D; Italy, with San Marino and Vatican CitynativeB,C,D; SardinianativeB,C,D; Sicily, with MaltanativeD (SicilynativeB,C)
A.Gamisans, J. 1985: Catalogue des plantes vasculaires de la Corse. – Ajaccio
B.Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin
C.Pignatti, S. 1982: Flora d'Italia 1
D.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
E.2006: Tela Botanica, Le réseau de la botanique francophone – http://www.tela-botanica.org/