Knautia dipsacifolia subsp. dipsacifolia

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 : 63

(f) Subsp. dipsacifolia ( K. sendtneri Brügger ): Usually robust. Middle internodes with purplish-based setae. Peduncles often glandular. Upper cauline leaves broadly rounded, auriculate at base. Corolla predominantly bluish-violet to lilac. 2л = 60. Mountains of W.C. Europe, extending to W. Hungary and E. France.