black fungi ball tree stump - daldinia concentrica (bolton) ces. & de not. - king alfred's cakes

fungus fungi nature woodland concentrica uk mushroom toadstool cakes daldinia black forest plant flora fall king autumn saprotroph alfred horizontal ascomycota sordariomycetes photography xylariomycetidae cramp ball coal balls xylariaceae decay macro background shape pezizomycotina xylariales british isles cap edible food ash rotten uncultivated poisonous common closeup mycology alfreds