In Ancient Greece, Diocles of Carystus (4th century BC) was one of several men studying the medicinal properties of plants. He wrote several treatises on the topic. The Greek physician Pedanius Dioscorides is famous for writing a five-volume book in his native Greek Περί ύλης ιατρικής in the 1st century AD. The Latin translation "De Materia Medica" ("Concerning medical substances") was used as a basis for many medieval texts and was built upon by many middle eastern scientists during the Islamic Golden Age, themselves deriving their knowledge from earlier Greek Byzantine medicine Byzantine Medicine.