common greenshield lichen (flavoparmelia caperata) growing on a crepe myrtle tree.

abstract algae background biology botanical botany brown closeup color common greenshield lichen composite organism crape myrtle crepe myrtle tree dry ecosystem environment flavoparmelia caperata foliose fungi fungus green growth horizontal horticulture isolated leaf lichenometry living macro macro nature microorganism people outdoor outdoors outside parmeliaceae pattern photosynthesis plant rough selective focus summer surface symbiotic texture textured tree lichen