Myeloconis guyanensis

Myeloconis guyanensis is a species of corticolous (bark-dwelling), crustose lichen in the family Trichotheliaceae. Found in the coastal lowlands of eastern Guyana, it was formally described as a new species in 1996 by Patrick M. McCarthy and John Elix. Characteristics of the lichen include the prominent on the, its yellow,  medulla, and the variety of lichen products found in the medulla.