Botanical Overview Inonotus obliquus, commonly known as Chaga, Black Birch Fungus, or Clinker Polypore, belongs to the Hymenochaetaceae family. It is a parasitic fungus primarily found in boreal forests of the Northern Hemisphere, including Russia, Northern Europe, North America, and Asia. The medicinal parts used are the sclerotium and conk, which are hardened masses of…