Calendula suffruticosa subsp. suffruticosa

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 : 206

(a) Subsp. suffruticosa (incl. C. noeana Boiss. , C. suffruticosa subsp. gussonii Lanza ): Stems usually erect. Leaves linearlanceolate to narrowly oblanceolate, acuminate, often conspicuously repand-dentate, glandular-pubsecent. Capitula 3-4 cm in diameter. Beaked achenes usually 3 cm, almost straight, patent or deflexed. Almost throughout the range of the species.