The little black mushrooms are called hazel mushrooms.

Hazel mushrooms are umbrella-shaped, light earthy yellow, brownish brown when old. In the middle of the top of the cap, there are small scales that are either flat or upright, nearly smooth after aging, and the edge of the cap has stripes arranged radially. Tear open the cover to see the mushroom flesh white. The mushroom stalk is slender, cylindrical, slightly thick at the base, the stalk is more curved, 5-13 centimeters high, with longitudinal stripes, and the inner part is fluffy to hollow.

Expanded Information:

Hazel mushroom is not only edible, but also medicinal. It has the function of dispelling wind and activating collaterals, strengthening muscles and bones. Commonly used in the treatment of eclampsia, lumbar and leg pain, rickets, etc.; often eaten to prevent vision loss, night blindness, dry skin; and enhance the resistance to respiratory and digestive infectious diseases.

Frequent consumption of wild hazelnut mushroom is very effective in preventing vision loss and night blindness. Meanwhile, hazelnut mushroom also has the same efficacy of dispelling wind and activating collaterals, strengthening tendons and bones, and sedation, etc. Its polysaccharides have pharmacological and health care effects such as anti-radiation, promoting hematopoietic function, regulating immune function, and inhibiting tumor growth.

Baidu Encyclopedia - Mushrooms