Delphinium verdunense, Balbis

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 : 215

21. D. verdunense Balbis , Cat. Stirp. Hort. Bot. Taur. app. 3, 31 (1813).

Stems 10-40(-80) cm, slender, minutely appressedpuberulent; branches usually erecto-patent, not virgate. Leaves small, usually all divided into linear-oblong segments. Inflorescence rather short and dense, usually 5- to 15-flowered. Flowers deep bluish-violet; perianth-segments 8-12 mm, appressedpuberulent outside; spur 14—19 mm. Limb of lateral honeyleaves up to i as long as claw, included, strongly cordate at base. Follicles 6-1 0 (-ll)m m, 2 1 -4 | times as long as wide, almost glabrous. S. W. Europe. G a Hs Lu.