Dimelaena oreina
Dimelaena oreina, the golden moonglow lichen, is a greenish yellow placodioid lichen. The color of the greenish yellow thallus is derived from usnic acid in the cortex. Habitat and range The lichen grows on steep surfaces of hard siliceous rock from . It has a worldwide distribution outside the tropics, Australasia, and Antarctica. It is common in the Sonoran Desert of Arizona, California, Baja California, Baja California Sur, Sonora, Mexico, and Chihuahua, Mexico. References Caliciales Lichen species Lichens described in 1810 Lichens of Europe Lichens of North America Lichens of South America Taxa named by Erik Acharius