The Malagasy baobabs are a marker of this extraordinary biodiversity of the Big Island, like 80% of Malagasy fauna and flora. The baobab still has many mysteries about its biological singularities. It has been studied since 2 centuries by botanists, since Michel Adanson who gave in 1749 in Senegal its name to the genus Adansonia. It is only fifteen years since the American taxonomist David Baum