Bupleurum falcatum subsp. falcatum

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 349

(a) Subsp. falcatum :

Leaves elliptical to oblong, distinctly petiolate; fruit c. 3 mm; ridges usually unwinged. 2« =16. Throughout the range o f the species.