A moderately rapid growing fungus that produces a cinnamon to orange-brown or brown colony within ten days, when incubated at 25oC (77oF). It is commonly found worldwide but especially in the tropical and subtropical regions. It can be isolated from air, soil, desert soil, mangrove swamps, salt marshes, sewage, mines, seawater, bird feathers, composts and silage, bees, and flour-type foodstuffs. Isolates can produce the mycotoxins patulin and citrinin which can be associated with human and animal disease. It can be an opportunistic human pathogen causing pulmonary, skin, ear, and nail infections.