Jasione laevis subsp. laevis

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 : 102

(a) Subsp. laevis :

Flowering stems usually 20-40 cm, с. 1 mm in diameter at apex, with (7-)12-17(-25) cauline leaves; leaves linear-oblong, cibate, the largest not more than 3(-4) mm wide. Bracts usually green. Mountains of W. & W.C. Europe from Luxembourg to the E. Pyrenees.