Public domain photos

The image shows a close up of a rock with lichen on it, which is a type of lecanora. The lichen is a light gray color and is spread across the rock in a uniform pattern. It has a rough texture and is covered in small bumps and ridges.

The image shows a close up of a rock with lichen on it, which is a type of lecanora. The lichen is a light gray color and is spread across the rock in a uniform pattern. It has a rough texture and is covered in small bumps and ridges.Open in library