Number of Species: Approximately 15 species.
Toxins: Macrocyclic trichothecenes: verrucarin J, roridin E, satratoxin F, G, and H, sporidesmin G, trichoverrol; cyclosporins, stachybotryolactone.

Stachybotrys, a dark colored fungi, thrives on water damaged cellulose rich materials such as sheet rock, paper, ceiling tiles, cellulose containing insulation backing and wallpaper. The presence of this fungus in buildings is significant because of the mold's ability to produce mycotoxins, which are extremely toxic. Exposure to these toxins can occur through inhalation, ingestion or dermal exposure and can include these symptoms: dermatitis, cough, rhinitis, nose bleeds, cold and flu symptoms, headache, general malaise, and fever.