John Henry Schaffner (1866–1939) was an American botanist and professor at Ohio State University. He is known for his contributions to the

floral diagram Floral diagram is a graphic representation of flower structure. It shows the number of floral organs, their arrangement and fusion. Different parts of the flower are represented by their respective symbols. Floral diagrams are useful for flower ...

and for his work on

reduction division Meiosis (; , since it is a reductional division) is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately re ...

. Schaffner is the botanical authority, for seven taxa that bear his name, such as '' Equisetum kansanum'' J.H.Schaffn..

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