The Gulf of Guinea is a large part, with about 400 species, which are broadly located in Asia, Europe, the Americas and Africa, with important economic and ecological values. It is also a well-known group of classification difficulties, which is uncertain in scope and is subject to long-standing controversy. The currently widely used subcategorization system was introduced by the European phytologists, Besser, at the beginning of the nineteenth century and has been revised by generations of c...