Xanthoparmelia waboomsbergensis

Xanthoparmelia waboomsbergensis is a species of foliose lichen in the family Parmeliaceae. It was formally described as a new species in 2002 by Australian lichenologist John Elix. The type specimen was collected from the summit of Waboomsberg mountain (Cape Province) at an altitude of 1220 m. The species epithet refers to the type locality, the only place the lichen is known to occur.

Description
The thallus of Xanthoparmelia waboomsbergensis has a somewhat crustose morphology, with a tight attachment to its substrate; its colour is pale yellow-green, reaching a diameter of up to 1.5 cm. The lower thallus surface is black, with simple (i.e., unbranched), black rhizines. Xanthoparmelia waboomsbergensis contains several lichen products: stictic acid and constictic acid as major metabolites, minor amounts of usnic acid, and trace amounts of norstictic acid and cryptostictic acid.