White water-lily (Nymphaea alba e. Nuphar luteum)
Published by Jung-Koch-Quentell
Copyright 1964, printed in Germany, 1972.
Carleton College Biology Department
Although the popularity of wall charts had peaked in the early part of the century, botanical, zoological, and anatomical charts were published and distributed throughout the 20th century. This chart of a water-lily was published in 1972, well after other forms of media – including slide and overhead projectors – were common in classrooms.