Emil P. Kruschke (1907–1976) was a curator and botanist who collected plants.
He authored The Hawthorns of Wisconsin: Status, objectives, and methods of collecting and preparing specimens published in 1955[4] and Contributions to the Taxonomy of Crataegus published in 1965.
[5][6] He specialized in the study and taxonomy of plants in Wisconsin, borage and hawthorn families in particular.
[8] He was an organizer of the Citizens Natural Resources Association of Wisconsin (CNRA).
[10] He worked with fellow botanist Albert M. Fuller (1899–1981), an orchid specialist.