1, Penicillium (there are no very similar strains), and the fruiting body is medium to slightly larger. The cap is 3- 12cm in diameter. It is spherical at the beginning, and soon becomes flat and semi-spherical and gradually extends. The middle part is often slightly concave, non-sticky, light green to grayish green, and the epidermis is often patchy and cracked, with stripes at the edge when it is old. Mushroom meat is white. It tastes soft and has no special smell. Fungal folds are white, nearly vertical or free, dense, with transverse veins and equal length. The stipe is 2~9.5cm long and 0.8~3.5cm thick, and it is medium or soft inside. Edible. It can be used medicinally. It is recorded that the main indications are unclear eyes, purging the fire of liver meridian, dissipating heat and relaxing qi. It is best to take it, but you should not eat more. Ginger should be used as the food.

2, it should be black purple mushroom, or it may be purple purple mushroom. Some are like purplish red mushrooms or brown purplish red mushrooms, but they can be excluded from the depth of color or the color of the stalk.

The fruiting body of Russula nigricans is generally medium-sized. The cap is 4- 10cm in diameter, semi-spherical, flat at the back, concave at the middle, sticky when wet, smooth after drying, purplish red, purple or dark purple, darker at the middle, light at the edge, often faded, and thin and smooth at the edge. Mushroom meat is white and reddish purple under the epidermis. The taste is soft and slightly spicy at the back. The fungus folds white, slightly milky yellow at the back, equal in length, straight, narrow at the base and wide at the front. The stipe is 2-8cm long, 0.8-3cm thick, cylindrical, white, sometimes pink in the middle, slightly ochre at the base, gray after aging in wet conditions, solid in the middle and hollow in the back. Edible, but the taste is average.

(black purple mushroom)

The fruiting body of Corydalis purpurea is smaller. The cap is 3-6.5cm in diameter, flat and hemispherical to nearly flat, concave in the middle, violet, lilac or sometimes greenish, sticky when wet, with smooth or slightly striped edges. Mushroom meat is white and spicy. After the initial pure white, the fungus fold is milky yellow, straight and curved, dense and forked. The stipe is 3~6cm long, 0.5~ 1.3cm thick, nearly rod-shaped, white, slightly yellow and firm to soft in the later stage. Edible.

(Corydalis purpurea)

3, it should be a kind of milk mushroom. It may be Lactarius fuscus or Lactarius crispus. It is somewhat similar to Russula rosea, but the concave degree from the umbrella cover and the size of the fruiting body can be excluded.

The fruiting body of Lactarius fuscus is small to medium large. The middle part of the cap is convex, the surface is dark red, reddish or rust-colored, the diameter is 3- 10cm, it is hemispherical at the initial stage, then it is flat, the surface is smooth or wrinkled, and the edge is rolled up gradually. Mushroom meat is reddish, thin and crisp, and the color of milk does not change, with pepper flavor. The bacterial folds are light cinnamon or reddish, dense, spreading and forked. The stipe is cylindrical, with the same cover color, 3- 10cm long and 0.5- 1cm thick, hollow, with fine hairs at the base. Spores are printed white. According to records, it is toxic and causes gastrointestinal diseases after poisoning.

(reddish Lactarius fuscus)

The fruiting body of Lactarius crispus is smaller. The cap is 2.5~7cm in diameter, flat and hemispherical or nearly flat to shallow funnel-shaped. The middle part of the cap is concave sometimes with small protrusions, usually bright orange to reddish yellow, sometimes reddish brown, with dark color in the middle part, no ring lines, dry surface, sticky when wet, wavy edges and short grooves. The mushroom meat is thin and crisp, with white milk and fragrant smell. Fungal folds are light pink and yellow-red, lighter or yellow than the cover color, straight to extended, dense and unequal in length. The stipe is 4.5~8cm long and 0.4~ 1cm thick, nearly as thick as a column, almost covered with color, brittle, hollow and hairy at the base. Edible, with a strong aroma.

(red and yellow crispy Lactarius)

It is best to have the guidance of local people who are familiar with it when picking wild mushrooms, and don't eat them at will.