Lepra lichexanthonorstictica

Lepra lichexanthonorstictica is a species of crustose and corticolous (bark-dwelling) lichen in the family Pertusariaceae. Found in Brazil, it was formally described as a new species in 2021 by Dutch lichenologist André Aptroot. The type specimen was collected by Aptroot from the summit area of Quiriri (Garuva), at an altitude of 1350 m; here it was found growing on the bark of a pine tree. The lichen is named after its two major secondary compounds, lichexanthone and norstictic acid. Lepra lichexanthonorstictica has a thin, smooth and glossy thallus ranging in colour from white to very pale yellowish. The thallus has discrete, rounded soralia measuring about 0.5–0.9 mm in diameter.