Hypoxylon multiforme, known as birch woodwart fungus

Hypoxylon multiforme, also called Jackrogersella multiformis, commonly known as the birch woodwart fungus

AnnulohypoxylonAnnulohypoxylon multiformeBirch WoodwartFinlandHypoxylon multiformeascomyceteascomycetesblackdeadwoodfungifungushypoxylonkoivunsyylälogmultiformemushroommushroomssyyläwartywoodwartJackrogersella multiformiskoivunsyyläsieniAscomycota