Xanthoparmelia indumenica is a species of saxicolous (rock-dwelling), 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 Cathedral Peak on Rainbow Gorge (KwaZulu-Natal) at an elevation of , where it was found growing on a sandstone boulder. The lichen has a yellowish-green thallus (darker green towards the center) that is broad. It contains several secondary metabolites (lichen products): protocetraric acid, stictic acid, constictic acid, and usnic acid.