Abstract
The following results were found in shaking culture of Eremothecium ashbyii for 6 days. (1) The riboflavin content of the mycelium increased to a maximum on the 4th day, and it decreased later. (2) A blueish green fluorescent substance having Rf 0.17 was observed in both broth and mycelium. With the growth of the fungus, its fluorescence became stronger.