Maitake dried mushroom
From webmd.com :
Maitake mushroom is a fungus that has been eaten as food in Asia for thousands of years. People also use it to make medicine.
Maitake mushroom is used to treat cancer and also to relieve some of the side effects of chemical treatment (chemotherapy) for cancer. It is also used for HIV/AIDS, chronic fatigue syndrome (CFS), hepatitis, hay fever, diabetes, high blood pressure, high cholesterol, weight loss or control, and infertility due to a condition called polycystic ovary syndrome.
If you decide to harvest maitake mushrooms, make sure you can tell them apart from poisonous mushrooms. This job is probably best left to experts.
How does it work?
Maitake mushroom contains chemicals which might help fight tumors and stimulate the immune system. There is some evidence that it can lower blood pressure, improves cholesterol levels, lower blood sugar levels, and reduce weight in rats, but this has not been shown for humans yet.