Orobanche rapum-genistae subsp. rapum-genistae

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 293

(a) Subsp. rapum-genistae :

Bracts shorter than to slightly exceeding corolla; bracts, corolla, style and upper part of filaments glandular-pubescent; corolla pale yellow to reddish, the upper lip subentire, porrect. Throughout the range o f the species.