Campanula jaubertiana subsp. jaubertiana

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 : 92

(a) Subsp. jaubertiana :

Basal leaves cordate at base. The vein ending in the sinus arising near the base of the calyx-tube. Calyxteeth sublinear. C. Pyrenees.