Rolf Singer

Rolf Singer (June 23, 1906 – January 18, 1994) was a German mycologist and taxonomist of gilled mushrooms (agarics).

He wrote the book "The Agaricales in Modern Taxonomy". He fled to various countries during the Nazi period, pursuing mycology in the Soviet Union, Argentina, and finally the United States, as mycologist at the Field Museum in Chicago. Provided by Wikipedia