Mushroom (scientific name: mushroom) consists of mycelium and fruiting body. Mycelium is a vegetative organ, and fruiting body is a reproductive organ. Mushrooms are different from plants. Plants can carry out photosynthesis, but mushrooms can't. Mushrooms are fungi, which can be divided into large fungi and small fungi (including epiphytic fungi). There are as many as 36,000 kinds of mushrooms, which germinate from mature spores into hyphae. The hyphae are multicellular, with septa, elongated growth at the top, white, slender, fluffy and gradually filamentous.

Mycelia combine with each other to form a dense mass called mycelium. After the mycelium saprophytes, the thick brown culture turns light brown. The fruiting body of a mushroom is like an open umbrella when it matures. It consists of cap, stalk, fold, ring and pseudomycorrhiza. Poisonous mushrooms will do harm to people's health, and in severe cases, they will be life-threatening. Mushrooms are divided into about 1 domain, 2 kingdoms, 5 phyla, 12 class, 14 subclass, 800 orders, 1400 family, 8,500 genera, totaling about 36,000 species.