Iris pallida subsp. pallida

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 91

(a) Subsp. pallida :

Leaves glaucous, thick, finely ribbed, some of them usually persisting through the winter. Flowers 3-6, lilac; spathes silvery-white. Seeds c. 10 x 7 mm, angled, reddish-brown. Probably native only in W.C. Jugoslavia; naturalized elsewhere.