Lepraria eburnea

Lepraria eburnea is a widespread species of leprose lichen in the family Stereocaulaceae. It forms a powdery to cottony thallus that lacks clear boundaries and contains alectorialic acid as its main secondary metabolite. It grows on various substrates including rock, bark, and soil, showing a particular preference for calcareous materials in some regions. The lichen is found across Europe, North America, Australasia, and Greenland, occurring from sea level to alpine elevations, and is typically found in...