If you look at these white lichens from more than a few metres away, you would see no field marks to help with identification, but from up close you can see a lot more detail. You would see that the lichen’s white, featureless surface is really quite warty and full of all kinds of tiny features.
Calcareous Rimmed lichen forms roundish white spots on exposed rock, it has a surface that often cracks like dried mud and can become spotted with tiny black spots. This is the calcareous rimmed lichen.
Calcareous Rimmed Lichen is found worldwide wherever limestone rock exposes itself to the elements. In North America, it is more common in the west. It is found growing on all parts of Vancouver Island.
I love to look at all lichen but these ones really fascinate me with all the designs you can see forming in them.