Xanthoparmelia barklyensis

Xanthoparmelia barklyensis 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 from Barkly Pass at an elevation of about, where it was growing on sandstone. The lichen contains constipatic acid as well as associated fatty acids, and usnic acid. Hale suggested that this species could be a morphotype of Xanthoparmelia aliphatica, from which it differs by having a pale lower thallus surface.