Delphinium, DC. Perennial. Limb

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 213

Sect. Delphinastrum DC. Perennial. Limb of lateral honey-leaves deflexed, ciliate, bearded on the upper surface. Upper honey-leaves not winged, not clawed. Seeds numerous.