Echium triste subsp. triste SynonymySource: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Echium triste Svent. subsp. tristeContentDistribution Bibliography Distribution ● Ca(C) Euro+Med endemic: Canary islands nativeA (Gran Canaria nativeA) Bibliography A. Hansen, A. & Sunding, P. 1993: Flora of Macaronesia. Checklist of vascular plants. 4th revised edition. – Sommerfeltia 17