Inula verbascifolia subsp. parnassica, (Boiss. & Heldr.)

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 : 136

(c) Subsp. parnassica (Boiss. & Heldr.) Tutin , loc. cit. (1973)

( I. parnassica Boiss. & Heldr. ):

Like subsp. (b) but capitula subtended by 2-4 lanceolate bracts; involucre 7-10 mm; outer bracts at least | as long as inner, all acute; ligules exceeding the involucre by less than 2 mm. • C. & S. Greece.