Dioscorides’ On Materia Medica consists of five books arranged in three broad categories: animals, minerals, and plants. The plants are subsequently divided into the following sub-categories: roots, pot herbs, fruits, trees, and shrubs. The subcategories are further divided into chapters according to associations or similarities based on botanical form, mode of extraction, drug purpose, and medical treatment.
Pedanius Dioscorides of Anazarbus
ΔΙΟΣΚΟΡÍΔΗΣ. Dioscorides Venice: Aldus & Andrea Asulanus, 1518 The Le Roy Crummer Collection