Reddish brown and white, fan-shaped, perennial fruiting body of Heterobasidion root disease, <i>Heterobasidion annosum</i>, on the lower trunk of a spruce tree blown down by wind.
Reddish brown and white, fan-shaped, perennial fruiting body of Heterobasidion root disease, Heterobasidion annosum, on the lower trunk of a spruce tree blown down by wind.
Credit: Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org
Licensed under a Creative Commons Attribution-Noncommercial 3.0 License