The Morgan Dioscurides (Pierpont Morgan Library, MS M. 652) is a 10th-century Byzantine illuminated copy of the De Materia Medica by the Greek physician Dioscurides, which covers the medical use of herbs and other natural resources. It is a tenth-century incarnation of Dioscorides’ De Materia Medica, written in AD 65 and widely regarded as the most comprehensive collection of naturally occurring resources (plants, animals etc.) and their medical uses. Today, it is regarded as an early, fairly accurate, form of pharmacological text, in herbal form.