Xanthoparmelia toolbrunupensis is a species of foliose lichen in the family Parmeliaceae,[2] first described scientifically by the lichenologist John Elix in 2003.

The specimen was discovered on volcanic rocks in a dry sclerophyll forest, characterised by pockets of denser shrub vegetation.

[1] The thallus of Xanthoparmelia toolbrunupensis is small-foliose to somewhat crustose and very tightly attached to the substrate, spanning up to 5 cm (2 in) in width.

[1] The upper surface of the thallus is pale yellow-green, becoming darker and duller with age, featuring a smooth or weakly rugulose (wrinkled) texture that develops transverse cracks over time.

[1] Xanthoparmelia toolbrunupensis is specifically found on volcanic rocks atop small mesas within dry sclerophyll forests and shrublands in the Stirling Range of Western Australia.