Not yet clear what kind of fungi are eaten by the victims, but poison Amanita phalloides, or death stamp, found in Iran.
More than 800 people were poisoned after eating poisonous wild mushrooms in about 10 provinces in western Iran.
At least 11 people have died from the effects of fungi and hundreds have been hospitalized.
There is no effective treatment for this type of poisoning, reports Iran's Tasnim News Service.
At least two people have received a liver transplant. The fungus in question looks similar to edible mushrooms.
People are urged not to buy loose mushrooms and only buy packaged and sealed in stores.
According to BBC Persia, mushrooms can sometimes be seen on the street in Iran, and local wisdom about which foods are safe to eat is unreliable.
Deadly mushrooms grow wild in mountainous areas in western Iran after spring, according to Tasnim.
Seven dead came from Kermanshah.
Reports show that unprecedented rainfall over the past month has caused more mushrooms to grow than usual.
 