While i can't tell you what species of mold this is, I can tell you that we had this fluffy white mold in various locations in our master bedroom, along with atleast 2 other types. I have been suffering from a multitude of symptoms for 9 months and am convinced my illness is a direct result of mold exposure. I've seen 4 doc's ,an allergist, oral surgeon. 2 dentists, and an ENT...still no diagnosis. In researching toxic mold exposure, I found that most docs haven't a clue what mold toxicity is, what the syptoms are, nor how to treat it! In my experience I found this to be true...Docs are clueless. My main symtpoms have been sore throat, sensation that something is caught in throat, swollen tonsils, itching and burning of throat and inner ear, pain swallowing, numbness in arm and hand, severe dry mouth....Good luck