What kind of mushroom is this?

This is a fungus belonging to the genus Pleurotus, which may be the late purple Pleurotus or milky yellow Pleurotus.

The fruiting body of Pleurotus eryngii is very small. The diameter of the cap is 1-3 cm, which is oblate or bell-shaped at first, then gradually flattened and the surface is smooth. The middle part is slightly concave into an umbilical shape, with a small bulge at the top, and a purple groove of purple brown or light brown is radially formed from the top of the cap, and all colors of the cap become lighter in the later period. The meat of the bacteria is white and thin, the brown of the bacteria is nearly free, the dirty white is yellowish white, sparse, wide and different in length. The stipe is 4- 1 cm long and 0.2-0.3 cm thick. The upper part is dirty white and gradually turns brown towards the bottom. It is cylindrical and upright, with fine hairs on the surface, coarse white hairs on the base and soft to hollow inside.

(small leather umbrella with purple groove)

The fruiting body of Flammulina velutipes is umbrella-shaped and small. The cap is bell-shaped, hat-shaped or nearly flat, with a diameter of 0.8 ~ 4.5 cm. There are umbilical folds in the center, and the deep grooves are radial, milky yellow or cheese-colored to white. The groove is purple-brown and the navel is dark. Mushroom meat is near white. The bacterial fold is straight, with transverse veins, thin and dirty, grayish yellow and white. The stipe is columnar, with a length of 4 ~12cm and a thickness of 0.1~ 0.3cm. It is purplish brown with white fluff, and its base is enlarged with white fluff.

(Younger ivory and yellow umbrellas)