While he is known as a natural historian who was well versed in many fields of research, Kumagusu put much of his effort into the research of mushrooms (fungi), slime molds (myxomycetes), and fresh water algae. His collection of specimens and research continued from his days abroad until late in his life, during which he discovered several new species of slime molds, including one from his own garden.
His collection of specimens and drawings of fungi reached over 4,500. He is called “the father of the study of Japanese slime molds.”
Imperial Lecture and Presentation of Specimens for Emperor Shōwa |