Lecidea fuscoatra

Lecidea fuscoatra is a species of saxicolous (rock-dwelling) crustose lichen in the family Lecideaceae. This widespread species is found across Europe, North America, North Africa, and Asia. First described by Carl Linnaeus in 1753, it forms a thin crust that breaks into small, shiny, tile-like patches ranging from whitish grey to pale brown, typically outlined by a black border of fungal tissue. The lichen produces small black disc-shaped fruiting bodies that are often nestled between the...