Coronilla L.
(excl. Securigera)
As currently understood, Coronilla is a genus of nine species, native to the Mediterranean region, Macaronesia and parts of Europe. Species with angled stems formerly included in Coronilla are now accommodated in Securigera (Lassen 1989a). Lambinon & al. (2004) enumerates three species of Coronilla from northeastern France (C. coronata L., C. minima L. and C. vaginalis Lam.); none of these has ever been recorded in Belgium.
A fourth species, Coronilla glauca L. (syn.: C. valentina L. subsp. glauca (L.) Battandier), a native from the Mediterranean area, has been introduced in a garden in Mons and abundantly self-seeds (cracks in pavement, gravel,…) (similar records are known from the British Isles as well; see Clement 1982). Like Coronilla minima and C. vaginalis it is a small, (semi-) evergreen shrub with yellow flowers. However, its leaves are not scarious at margin and it is usually taller (easily reaching 150 cm).
References
Ball P.W. (1968) Coronilla. In: Tutin T.G. & al. (eds.), Flora Europaea, vol. 2. Cambridge University Press, Cambridge: 182-184.
Clement E.J. (1982) Adventive news 23. Mixed bag. BSBI News 32: 18-20.
Hrabetová A. (1935) Revision der Gattung Coronilla L. Beih. Bot. Centr. 53: 1-174.
Lambinon J., Delvosalle L., Duvigneaud J. (avec coll. Geerinck D., Lebeau J., Schumacker R. & Vannerom H. (2004) Nouvelle Flore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des Régions voisines (Ptéridophytes et Spermatophytes). Cinquième édition. Jardin botanique national de Belgique, Meise: CXXX + 1167 p.
Lassen P (1989a) A new delimitation of the genera Coronilla, Hippocrepis, and Securigera. (Fabaceae). Willdenowia 19: 49-62.
Lassen P. (1989b) Om kroniller, släktet Coronilla, i Norden. Svensk Bot. Tidskr. 83: 83-86.
Lees J.M. (1995) Coronilla. In: Cullen J. & al. (eds.), The European Garden Flora, vol. 4. Cambridge University Press, Cambridge: 516.
Schmidt B. (1979) Beiträge zur Kenntnis der Sippenstruktur der Gattung Coronilla L., Feddes Repert. 90: 257-361.