Ulex parviflorus subsp. parviflorus

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 : 103

(a) Subsp. parviflorus :

Short shoots and spines more or less glabrous; long shoots crispate-pubescent to subglabrous. Calyx 6-5—9-5(—11-5) mm, appressed-pubescent when young. Almost throughout the range of the species.