Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
abstract background biology brown candelaria candleflame color concolor cover covering crustose detail ecology ecosystem environment fungi geology grain grey lecanora lemon lichen limestone marl marlstone mineral muralis natural nature old orange organism outdoors patches pattern physcia protoparmeliopsis rhizocarpon rock rocks rough sedimentary sparse stone surface symbiotic texture textured weathered weathering white yellow