The ascomycete fungi,
Chaetomium spp. is commonly found growing on sheetrock and processed wood building materials. The organism grows at a moderate rate on the culture.
The spores are readily identified in an Air-O-Cell cassette air sample with the characteristic lemon drop shaped spores. On sheetock,
Chaetomium spp. forms visible dark spots on the material. The hard perithecia containing the spores will crack a glass cover slip.
The organism grows best on MEA and PDA and less well on DG-18 due to the lower moisture content.
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Chaetomium spp. spores - line drawing
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| Chaetomium spp. at 100x the perithecia - line drawing |
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| Chaetomium spp. spores - approximately 10 microns in length 400x - N. Carlson |
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| Chaetomium spp. perithecia 100x N.Carlson |
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Chaetomium spp. growth on sheet rock no magnification - N. Carlson
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| Chaetomium spp. growth in culture- N. Carlson |
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