yellow and orange lichen on tree bark, symbiotic combination of a fungus with an algae or bacterium, close up, macro in fall on th

abstract algae and background bacteria bacterium bark biology botanical botany canyon close combination conservation contours copy county crust detail ecosystem environment fall feed flora forest fork formicinae front fungi fungus growth herbology lake lichen macro maple micro moss mountains natural oak old oquirrh orange organism parietina pattern reproduce research rose salt science slow space study symbiotic texture trails tree trunk utah wallpaper wasatch wood xanthoria yellow