Phyteuma scheuchzeri subsp. scheuchzeri

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 : 97

(a) Subsp. scheuchzeri :

Basal leaves linear-lanceolate, truncate to cuneate at base. Outer bracts often much longer than the inflorescence. From c. 6° 45' to 11 ° F.; usually calcifuge.