Xanthoparmelia viridis
Xanthoparmelia viridis is a species of saxicolous, foliose lichen in the family Parmeliaceae. Found in Southern Africa, it was formally described as a new species in 1986 by the American lichenologist Mason Hale. The type specimen was collected by Hale from the Karoo Desert National Botanical Garden at an elevation of, where it was found on a hillside growing on schist ledges. The lichen thallus is greenish yellow in color and measures broad, comprising somewhat irregular to more or less linear that are 1.2–2.5 mm wide. It contains fumarprotocetraric acid, succinprotocetraric acid, and usnic acid.