'Pietro Andrea Gregorio Mattioli' ('Matthiolus') (
23 March 1501-
1577) was a
doctor and
naturalist born in
Siena.
He received his MD at the
University of Padua in 1523, and subsequently practiced the profession in Siena,
Rome,
Trento and
Gorizia, becoming personal doctor of
Ferdinand and
Maximilian II.
A careful student of
botany, he described 100 new plants and coordinated the
medical botany of his time in his ''Discorsi'' ("Commentaries") on the ''Materia Medica'' of
Dioscorides. The first edition of Mattioli's work appeared in 1544 in
Latin. There were several later editions in Latin, and translations into
Italian,
French, and
German.

Unlike many earlier woodcuts, this one is clearly a representation of ''
Oxalis''.
In addition to identifying the plants originally described by Dioscorides, Mattioli added descriptions of some plants not in Dioscorides and not of any known medical use, thus marking a transition from to the study of plants as a field of medicine to a study of interest in its own right. In addition, the
woodcuts in Mattioli's work were of a high standard, allowing recognition of the plant even when the text was obscure.
References
★ Duane Isely, ''One hundred and one botanists'' (Iowa State University Press, 1994), pp. 26-28