Vintage German apple botanical plate
Wall charts such as these were used in Germany and throughout the world in the late 19th and early 20th centuries as a teaching aid. Painter Gottlieb von Koch worked in collaboration with Dr. Friedrich Quentell and Heinrich Jung to show the entire lifecycle of the plant. The charts in this series were originally printed in Germany in the late 1960s and early 1970s; each chart indicates the year of its printing.