1. shape: the center of the toxic cap is convex, with a strange shape, thick and hard surface, a ring on the stalk, a slender or thick stalk that is easily broken, and a volva on the lower part.

2. Secretion: Tear off the fresh wild mushrooms. The toxic secretion is thick and reddish brown, which is easy to change color in the air after tearing.

3. Smell: There are poisonous mushrooms with strange smells, such as spicy, sour and fishy.

Extended information:

Mushrooms, commonly known as Agaricus fungi of Basidiomycetes, have about 3,25 species. Because most individuals are like small umbrellas, they are called toadstools.

Mushrooms grow in a variety of environments, and certain kinds of mushrooms can be found almost everywhere where green plants can grow.

Mushrooms grow intensively in grasslands and forests. There are corresponding kinds of mushrooms in all seasons except early spring and winter, especially in August and September.

Reference: Mushroom-Baidu Encyclopedia.