This rare color chromolithograph is from Prof. Dr. Karl Schumann’s Bluhende Kakteen (Iconographia Cactacearum). The work was published by J. Neumann in Germany between 1900 and 1921, with this particular print published in 1906. The work was issued only once, and contains beautiful cactus plates illustrated by Toni Gurke, wife of the editor Max Gurke. Each features original hand-finished coloring with gum arabic. The work was a comprehensive look at nearly 200 flowering cactus species, with a strong selection from Central and South America.
Schumann founded the German Cactus Society and catalogued serval new species. He was also the curator of the Berlin Botanical Museum, and he taught botany at the University of Berlin. He also contributed to the field of botanical morphology and is credited with describing hundreds of new species. Three botanical genera and several cactus species have been named after him.