Porpidia albocaerulescens ( Smokey-Eyed Boulder Lichen )

Porpidia albocaerulescens is a lichen species that belongs to the family Lecanoraceae. Its name is derived from the Latin words “porpido” meaning “to cover” and “albocaerulescens” meaning “white-blue”. This lichen is characterized by its crustose thallus that is white to pale gray in color and has a smooth surface. The apothecia, which are the fruiting bodies of the lichen, are black and have a raised margin. The hymenium, which is the layer of cells that produces spores, is blue-black in color. Porpidia albocaerulescens can be easily distinguished from other similar-looking lichens such as Porpidia crustulata and Porpidia macrocarpa by its white to pale gray thallus and blue-black hymenium. Overall, Porpidia albocaerulescens is a beautiful and unique lichen species that is a delight to observe in its natural habitat.