Fomitopsis pinicola (Red-banded polypores)

Fomitopsis pinicola, is a stem decay fungus. Its conk (fruit body) is known as the red belt conk. The species is common throughout the temperate Northern Hemisphere. It is a decay fungus that serves as a small-scale disturbance agent in coastal rainforest ecosystems. It influences stand structure and succession in temperate rainforests. It performs essential nutrient cycling functions in forests.

— Wikipedia