Xanthoparmelia namakwa

Xanthoparmelia namakwa 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 Cape Province at an elevation of, where it was found growing on schist rock outcrops in flat pasture land. The lichen has a dark yellow-green thallus that is firm and leathery in texture, and measures broad. The species epithet refers to Namaqualand, a geographic area in which the type locality is situated. The lichen contains salazinic acid, norstictic acid, and usnic acid, and sometimes trace levels of other lichen substances.