Hazel Marguerite Schmoll (1890–1990) was an American botanist, and the first to conduct a systematic study of plant life in southwestern Colorado.

[3] Schmoll showed an early interest in learning about wildflowers and spent much time roaming the area on horseback collecting specimens and picking berries.

[2] She went on to conduct the first systematic study of plant life in the southwestern part of the state, a project that would later feed into her doctoral dissertation.

[1][4] Another of her roles was to educate the public about plant life in the Rocky Mountains,[4] and she served briefly (1920–21) as assistant curator for the State Bureau of Mines.

[2] In 1925, she was a leading lobbyist for efforts to pass legislation protecting the state flower, Aquilegia coerulea or blue columbine.

[1] A job which Schmoll had expected to be short-term ended up lasting until 1925, when Scholl left with the goal of pursuing a doctoral degree.

On returning, she enrolled at the University of Chicago for a Ph.D. in ecological botany, supporting herself with various jobs ranging from cleaning houses to rewriting a high school biology textbook.