The physician Valerius Cordus, son of the famous botanist Euricius Cordus, went through many woods and mountains discovering hundreds of new herbs. He gave lectures on Dioscorides at the University of Wittenberg, which experts from the university attended. Cordus had no intention of publishing his work. Five years after his death, a Materia Medica with commentaries was published. It contained the index of the Botanologicon, the outstanding work of his father Euricius, who developed a scientific classification of the plants. The following pages are on Gesner's Nomenclature,  relating the different synonyms used for referring to the same plants of the Dioscorides work.
The abstracts of the lectures of Valerius Cordus go from page 449 to 553 as commentaries. This section consisted of a very refined explanation of Dioscorides teachings with more specifics on the variety of plants and habitats, and corrections of errors. Cordus refers to both his and his fathers observations. Eucharius Rösslin's herbal illustrations are prominent in this work, followed by 200 of Fuchs. This work and the model of botanical description and, many consider it the boldest innovation that was made by any botanist of the 16th century.