chaga mushroom also known as inonotus obliquus growing out of an birch tree trunk. chaga is used for natural herbal remedy.

alternative background bark birch black brown canker chaga collecting concept cure dark day europe folk forest fresh fungi fungus gathering growing growth healthy herbal herbalism inonotus mass medicinal medicine melanin mushroom natural nature northern object obliquus organic outdoors parasite picking plant remedy rough summer sunny tea texture treatment tree trunk wild wood