Parmotrema lichexanthonicum

Parmotrema lichexanthonicum is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was formally described as a new species in 1997 by Sionara Eliasaro and Mónica Adler. The type specimen was collected by the first author from the Serra do Cipó (Santana do Riacho, Minas Gerais); here the lichen was found growing on a rock. The specific epithet lichexanthonicum refers to the presence of the secondary compound lichexanthone in the medulla of the lichen.[1] Other compounds in the lichen are the depsidone salazinic acid (found in the medulla), and the depside atranorin (found in the cortex).[2] A close relative to this species is Parmotrema ultralucens, which contains the same cortical and medullary metabolites.[1]

Parmotrema lichexanthonicum
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Lecanorales
Family:	Parmeliaceae
Genus:	Parmotrema
Species:	P. lichexanthonicum
Binomial name
Parmotrema lichexanthonicum Eliasaro & Adler (1997)