Characteristics: Allergen Type I and Type III also considered to be rarely pathogenic and toxigenic.
Description: It is often found in saprophytes (an organism that grows on and derives nourishment from dead or decaying matter) and other plant pathogens. It is found everywhere in nature. It is commonly the cause of wood rot indoors. It is disseminated by the wind during period of high humidity or rain. For indoor growth this fungus requires wet conditions. Occasionally, a benign, non-wood rotting mushroom will fruit inside a building, growing in some unique ecological niche if enough moisture is present. As an allergen, it has been known to cause Type I allergies (hay fever, asthma) and Type III hypersensitivity pneumonitis (Lycoperdonosis, and Mushroom culture hypersensitivity symptoms. As a pathogen, it has been known to cause rare opportunistic infections. As a toxigenic agent, it produces mushroom toxins that are usually ingested including amanitins, monomethyl-hydrazine, muscarine, ibotenic acid, and psilocybin.