What is the fungus Fomes fomentarius of Ganodermataceae?

The Ganodermataceae fungus Fomes fomentarius is a perennial wood-boring fungus that belongs to the Polyporaceae family. It is commonly known as "wood-boring fungus" or "fire-resistant fungus".

The fruiting body of this fungus is sessile, woody, and grows on the trunks of broad-leaved trees such as Betula, Quercus, Populus, Salix, and Ulmus. The surface of the fruiting body is grey to dark brown, often with a hard, corky crust, and shows a characteristic annular pattern. The flesh is soft and pinkish brown. The pores on the underside of the fruiting body are circular and light brown.

This fungus is distributed widely in Northeast Asia and eastern Siberia. In China, it is found in many provinces including Heilongjiang, Jilin, Inner Mongolia, Hebei, Shanxi, Shaanxi, and Gansu. It is commonly used in traditional Chinese medicine as a medicine that can invigorate Qi and strengthen the spleen and stomach.

Note: The information provided here is for reference only. It is recommended to consult a professional or check reliable resources for more accurate information.