detail of a tree excrescence, burl on a tree trunk in a forest, disease

abnormally anomaly background bark beautiful birch botanical breed bright burl cancer closeup colorful cone crust curvature damaged decoration defect design detail diseases eroded excrescence flora flower forest fungi green illness leaves natural nature old organic outgrowth plant root sick sickness spring tree treeburl treedisease treeillness treesickness treetrunk treetrunkexcrescence trunk white