Lecanora viridipruinosa

Lecanora viridipruinosa is a rare species of crustose lichen in the family Lecanoraceae. Found in Alaska, it was formally described as a new species by the lichenologists Måns Svensson and Toby Spribille. The type specimen was collected from the Hoonah-Angoon Census Area in Glacier Bay National Park. Here it was found growing on exposed argillite rock in an alpine heath at an elevation of 920 m (3,020 ft). The specific epithet viridipruinosa refers to the greenish pruina on the discs of the apothecia. The lichen is only known to occur in the type locality....read more on Wikipedia.