Mold from johnnacy's blog

Mold: parasitic, microscopic fungi (like those in the genus Penicillium that produce penicillin) with spores that float in the air like pollen. Mold is a common trigger for allergies and can be found in damp areas, such as the basement or bathroom, as well as in the outdoor environment in grass, leaf piles, hay, mulch, or under mushrooms.