Five Botany Drawings From Köhler's Medicinal Plants Vol. 1 - Etsy
Köhler's Medicinal Plants - Wikipedia
Cinnamomum cassia - Wikiwand
Marshmallow, Althaea officinalis. Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887 Stock Photo - Alamy