contaminant of water-damaged houses and of heating ducts . [ 2012/2/7 ] [ 5:12 PM ] [ ] pycnidium A pycnidium (plural pycnidia) is an asexual fruiting body produced by mitosporic fungi in the form order Sphaeropsidales ( Deuteromycota , Coelomycetes ). It is often spherical or inversely pearshaped ( obpyriform