bacterial crown gall (agrobacterium radiobacter) on tree trunk along hiking trail at awenda

tree green nature branch plant leaf trunk forest woodland flower wildlife jungle wood autumn deciduous grass bacterial crown gall agrobacterium radiobacter hiking trail awenda spring radiobacter background bark beautiful beauty black botany branch bright brown canada closeup color colorful conservation environment flora foliage forest green growth hiking landscape leaf leaves light lush natural nature ontario outdoor park plant provincial scenery scenic season spring sunlight sunny tourism trail travel tree trunk view wild wilderness wood