Groff mentioned that, during a visit to the American ministry of agriculture in 1917, the botanist Frederick Coville showed him a luo han guo fruit bought in a Chinese shop in Washington, DC.
Groff nämner att under ett besök i det amerikanska jordbruksministeriet 1917 visade botanisten Fredrik Coville honom en Luo han Guo-frukt köpt i en kinesisk butik i Washington.