Collema coniophilum

Collema coniophilum, the crumpled tarpaper lichen, is a species of foliose lichen in the family Collemataceae, first found in inland rainforests of British Columbia. This small, leaf-like lichen forms dark olive-green to black lobes that become thicker at the tips and develop a wrinkled appearance with age. The species gets its name from its preference for growing on tree branches that are coated with calcareous road dust. It is known to occur in several locations in British Columbia's humid inland temperate rainforest belt, and in Alaska....read more on Wikipedia.