Adenostyles alpina subsp. alpina

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 : 189

(a) Subsp. alpina :

Stems and branches of the inflorescence fioccose; capitula with 3-5 bracts and 3-6 florets; corolla-lobes 2-5-3-2 mm. Throughout the range of the species, except Corse.