Aspergillus is a common mold with worldwide distribution. Aspergillus is often found in soil and plant materials, particularly in tropical and sub-tropical regions. Aspergillus is a common mold in houses.
Cladosporium is a very common mold with worldwide distribution. It is commonly isolated from soil, plant debris, leaf surfaces, textiles, food, lumber and other building materials. It is often the most frequently isolated mold in air samples from both indoor and outdoor environments.
Penicillium species are most commonly found in soils, paper, foods, grains, and compost piles. In indoor environment, Penicillium is common damp wallpaper, organic substances, and is also known to grow within fiberglass duct insulation.
Stachybotrys species (black mold) are commonly isolated from soil and decaying plant material. Stachybotrys is frequently common on wet cellulose containing material. In indoor environment, it is commonly isolated from water-damaged materials, including wallpaper backing and drywall elements. It is important to know that Stachybotrys is not the only mold that appears black.
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