a large growth of lignified fungi on a tree trunk. tree bark disease. a tumor on a tree trunk. sycamore disease

bark trunk parasite nature tree fungus growth wood landscape green old outdoor cancer fungal tumor tumour anomaly rough damage background virus closeup illness disease environment park medicine mushroom burl forest big detail alternative plant touchwood inonotus pattern chaga summer souvelle macro ecology foliage natural abstract obliquus infection sick textured knot