Knautia kitaibelii subsp. kitaibelii

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 : 66

(a) Subsp. kitaibelii :

Stem green, hirsute with rigid hairs. Leaves green, subhirsute. 2n — 40. Grassland and wood-margins. Throughout the range of the species.