What is the definition or description of: black mold?

? Stachybotrys: Molds consist of airborn spores and spreading forms (hyphae) growing on surfaces. Several species are black including stachybotrys and aspergillus. Black mold ingestion has been associated with a toxic syndrome with brain and blood disorders. Most patients do not ingest black mold so the correlation with their symptoms is less certain.

Stachybotrys genus : Stachybotrys is a genus of molds or asexually reproducing filamentous fungi, closely related to genus memnoniella.The worst species s chartarum&s chlorohalonata are known as black mold or toxic black mold, and associated with poor indoor air quality, that arises after fungal growth on water damaged buolding material it can cause many symptoms like headaches, sneezing, other allergic reactions.