Xanthoparmelia oribensis
Xanthoparmelia oribensis is a species of saxicolous, foliose lichen in the family Parmeliaceae. Found in South Africa, it was formally described as a new species in 1986 by the American lichenologist Mason Hale. The type specimen was collected from the Oribi Gorge Nature Reserve at an elevation of, where it was found growing on flat sandstone exposures near a cliff. Its thallus is yellowish green and measure broad. It contains several secondary metabolites : hypoprotocetraric acid, 4-O-demethylnotatic acid, usnic acid, skyrin, and minor levels of some unidentified substances.