If you look at Calcareous Rimmed Lichen from more than a few meters 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 in all parts of Vancouver Island.
I love to look at all lichen, but these really fascinate me with all the designs you can see forming in them.