Source: https://www.researchgate.net/profile/Jose_Vicente_Orellana/publication/273918734_Phytogeographical_characterization_of_SW_Cadiz_Spain_and_its_relationship_with_the_Tingitanean_Peninsula_Morocco/links/551049cc0cf203521969e6ce/Phytogeographical-characterization-of-SW-Cadiz-Spain-and-its-relationship-with-the-Tingitanean-Peninsula-Morocco.pdf