 In Greece, the number of species is around 5,700 (Strid and Tan, 1997 "Flora Hellenica") and in France, there are 4,630 species (Walter and Gillett, 1998 "1997 IUCN red list of threatened plants").Per unit area Greece is the country with the highest concentration of native plant species.Italy has 1371 endemic species and subspecies (18.9% of the total vascular flora).