fun fungal fact

[eub]

Some species of Penicillium and Aspergillus destroy leather and fabrics, imparting a musty odor to shoes and clothing. Before air conditioning and its dehumidifying action was common in the Louisiana of our youths, we remember that the insides of our shoes were always blue. This was probably the first unrecognized encounter with fungi for each of us.

Alexopoulos, Mims, and Blackwell, Introductory Mycology, p. 310.