Verbesina encelioides subsp. encelioides

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 : 142

(a) Subsp. encelioides :

Leaves usually densely pubescent and all auriculate. Involucral bracts usually more than 12 mm. Scattered throughout the European range of the species.