Jurinea cyanoides subsp. cyanoides

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 219

(a) Subsp. cyanoides :

Basal leaves with 5 pairs of linear segments, up to 5 times as long as wide. Involucral bracts 15—18(—20) mm, equal, linear-cuneate. • Throughout the range of the species except E. Russia and W. Kazakhstan.