Reishi (Ganoderma Lucidum) is a saprophyte mushroom that lives on dead wood, mainly of deciduous (oak, alder, birch) and very rarely coniferous trees. Ganoderma has several varieties. During growth, the fruit body of the ganoderma can absorb twigs or leaves into the hat. The fungus has a very solid structure. Its color can be from reddish to brown-violet or black with a yellowish tinge. When drying, the mushroom does not lose in mass, but completely lignified, retains its original shape. The hat is flat, kidney-shaped or ovoid. The skin is smooth, shiny, wavy, divided into many concentric growth rings with different shades. The pulp is spongy at the beginning, then, as it grows, it becomes dense and woody.