Echium horridum SynonymySource: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Echium horridum Batt. in Bull. Soc. Bot. France 39: 336. 1892ContentDistribution Bibliography Distribution Ag Eg Li Ma Tn Euro+Med not endemic: Algeria nativeA; Egypt nativeA; Libya nativeA; Morocco nativeA; Tunisia nativeA Bibliography A. Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin