Hello, first of all, please understand the growth process of fungus. The growth and development of black fungus is from stramonium - mycelium - substrate - stramonium, known as a life cycle or known as a generation.

The sexual reproduction of black fungus is carried out by heterozygous union, which must be combined by different mating types of mycelium to complete its life history. Black fungus is a heterozygous combination of bipolar mating system, is a single factor control, with "ten", "one" different sex. The different sexes of the stramenospores germinate under suitable conditions to produce mononuclear mycelium, which is called primary mycelium.

Primary mycelium initially multinucleate, and soon produce separation, the mycelium into a number of mononuclear cells. When each with "ten", "one" of the two mononuclear mycelium combined with nuclear mating, resulting in binucleated secondary mycelium, also known as binucleate mycelium.

Secondary mycelium of each cell contains in two different properties of the nucleus, binucleate mycelium through the locking union, so that the division of the two sub-cells contain the same nucleus with the mother cell. It is thicker than the primary mycelium, grows faster, and is more vigorous. Artificially cultivated strains are secondary mycelium.

Secondary mycelium from the surrounding environment to absorb a large amount of nutrients and water, a large number of reproduction, mycelium alternately entangled, the growth of dense mycelium in the substrate constitutes a white fluff visible to the naked eye is the mycelium. After a certain period of time, the mycelium gradually transformed to the propagation body of the seed body, and the seed body protoplast grew on the substrate. By absorbing a lot of nutrients and water from the substrate, the gelatinous and elastic black fungus substrate is gradually formed.

The matured substrate produces a rod-like stretcher on its ventral surface. The stretcher from the arrangement of the four cells side extends branchlets, branchlets and then produce stretcher spores. The stretcher spores are ejected from the entity through a special ejection organ on the substrate, and are dispersed by wind, finding a suitable substrate to restart a new generation of life history. Under suitable conditions, the entire generation of life history takes about 60-90 days to complete. Now you can tell you that the fungus growing on the tree belongs to the wild fungus, is growing in the dry trunk of the fungus food, no matter what the fungus growing on the tree can be eaten.