Orange powder lichen

As suggested by its name, C. candelaris is bright yellow, orange-yellow, or greenish-yellow. It has a powdery (leprose) appearance, a superficial thallus and lacks apothecia, soredia and isidia. It covers the substrate like a crust and therefore belongs to the leprose group of lichens.

Laundon described three chemotypes of this species: one with the chemical clycin, one with pinatric acid, and a third with both of these compounds.