Euro+Med: Belgium, with LuxembourgnativeA; DenmarknativeA; France, with Channel is. and Monaco (FrancenativeA); GermanynativeA; Great BritainnativeA; Ireland, with N IrelandnativeA (IrelandnativeB); NetherlandsnativeA; NorwaynativeA,C
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.Webb, D. A., Parnell, J. & Doogue, D. 1996: An Irish Flora. – Dundalk