Cladosporium is one of the most commonly identified outdoor molds. It is most often isolated from air during the times of year when humidity is elevated. It is found indoors in numbers that should be considerably less than outdoors. It is frequently found on fiberglass duct liners in the interior of supply ducts. Found most often on dead plants, soil, food, straw, paints and textiles. A common cause of extrinsic asthma. Acute symptoms are skin lesions, eye ulcerations, mycosis including infections of nails on feet and hands. Associated with edema and bronchiospasms, chronic cases may develop pulmonary emphysema. It is a fungal allergen and is considered a contributor to sick building syndrome and related health issues. It is capable of causing mycosis.