Lepra corallina

Lepra corallina is a species of saxicolous (rock-dwelling) crustose lichen in the family Pertusariaceae. First described by Carl Linnaeus in 1767 as Lichen corallinus, it was long known as Pertusaria corallina until molecular studies showed that Pertusaria in its traditional sense was not a natural group; the species was transferred to Lepra in 2016. The lichen forms a thick whitish to grey crust on acidic, lime-free rocks and is characterized by abundant coral-like isidia that often...