U.s. botanist, botanical collector and scientific illustrator (1869–1963).
Mary Agnes Chase (April 29 1869 – September 24 1963) was an American botanist who specialized in agrostology, the study of grasses. Although lacking formal education past elementary school, Chase was able to rise through the ranks as a botanist at the United States Department of Agriculture, beginning as an illustrator under the tutelage of Albert Spear Hitchcock, and eventually becoming a senior botanist, overseeing the USDA's Systematic Agrostology department. Chase conducted fieldwork abroad in Europe and South America and published several books, including the First Book of Grasses: The St