Cytisus (Sarothamnus)

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 : 87

Subgen. Sarothamnus . Leaves 1- or 3-foliolate. Flowers in leafy racemes. Sect, trianthocytisus Griseb. Twigs terete or angular. Calyxlips with straight margins. Leaves 3-foliolate, petiolate. Style straight or arcuate. Strophiole small or absent.