description Caloplaca saxicola Overview
Caloplaca saxicola is an orange crustose lichen that is also treated in some classifications under the genus Calogaya. Its thallus is closely attached to the substrate but becomes lobed at the margins, while orange apothecia commonly develop near the lobe tips; it lacks isidia and soredia. The lichen grows on calcareous rock, concrete, walls, monuments, and other exposed mineral surfaces in arctic and temperate regions.
help Caloplaca saxicola FAQ
What color is Caloplaca saxicola?
It is a bright orange crustose lichen. Its clustered orange apothecia are the small fruiting structures that make colonies especially noticeable on bare rock.
Where does Caloplaca saxicola grow?
It grows on exposed rock surfaces, including rocky uplands and coastal cliffs across the Northern Hemisphere. Its crust-like body is tightly attached to the stone.
What are the clustered spots on Caloplaca saxicola?
They are apothecia, the lichen's reproductive structures. In this species they are commonly orange and grouped across the crustose thallus.
How can Caloplaca saxicola be distinguished from Xanthoria candelaria?
Caloplaca saxicola is an orange crustose lichen that typically grows on rock, while Xanthoria candelaria is a yellow-green foliose lichen commonly associated with nutrient-rich bark. Their growth forms and usual substrates are useful first clues.
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