Rubber gyroscopes are all black or brown-black, shaped like pig's mouth, which is one reason why people call it pig's mouth mushroom. Another reason is that if people eat too much of this mushroom or eat it without washing, their lips will swell like pig mouths.
Rubber gyro only grows on pressed wood, and each pressed wood only grows once. This mushroom will not grow again, but it can grow mushrooms such as auricularia auricula. This feature is quite different from other mushrooms. Other famous mushrooms in Changbai Mountain area, such as Yuanmo (winter mushroom) and Yuhuan mushroom, grow every year.
According to the research of plant experts, rubber gyro has no nutritional value, which is contrary to other mushrooms. Why can a rubber gyro "arch" a person's mouth? Experts have confirmed that a poisonous fungus is attached to the fruiting body of rubber gyro. If it is not washed off, people will be poisoned if they eat it. Locals say it is "arched".
In Changbai Mountain area, there is a folk saying that Tricholoma brasiliensis can treat cancer, and there are also examples of actual cure. Donggang Town, Xianrenqiao Town, Fusong Town and other places in Fusong County, the hometown of ginseng, all have people who eat mushroom with pig's mouth to cure cancer. Some are gastric cancer, some are lung cancer and some are laryngeal cancer. These patients generally don't need to wash rubber gyroscopes? Or just wash it with clean water before eating. The strange basis is that cancer patients will not be poisoned by eating rubber gyro, which is probably the principle of "fighting poison with poison".
Some experts say that rubber gyro can cure diseases, but it is not its own function, but the role played by bacteria attached to its body surface.
In any case, this rare and peculiar fungus, such as rubber gyro, should be studied deeply, which may be of great use to human health and longevity.