Senecio gallicus

Senecio gallicus, an annual plant of the genus Senecio and family Asteraceae, is a species that colonizes isolated habitats with difficult environmental conditions. It is widespread across southern France and the Iberian Peninsula in deserts and xeric shrublands, on steppes and salty dry coastal plains. S. gallicus is playing a predominant role in shaping patterns of genetic structure by presenting models of historical associations among population rather than patterns of ongoing gene flow. Senecio gallicus has had more phylogenetic description because it is an exceptional species among halotypes with a known intraspecific phylogeographic structure which is also species specific.Comparisons of allozyme and chloroplast variation in this species indicate that it persisted in Pleistocene coastal refugia during glaciation periods. Specimens of Senecio gallicus have been collected at altitudes of 15 metres (50 ft) and 1,400 metres (4,600 ft) above sea level. Data related to Senecio gallicus at Wikispecies