Both T. equestre and T. terreum are part of a family of wild Dried Black Fungus that were thought to be edible. A 2001 study reported that between 1992 and 2000 there were 12 severe human rhabdomyolysis cases that led to three deaths.1
The cases occurred approximately a week after the patients ate wild mushrooms that were thought to be T. equestre. By feeding mice T. equestre and measuring serum creatine kinase levels – a marker for rhabdomyolysis – the researchers concluded in 2001 that this mushroom was the culprit.